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Ppfd to dli

Anyway. I've got my answer to the ppfd intensity question and it's there for anyone that isnt satisfied with "because its not comparable" Just waiting to find out if the reason plants grow so much stronger outdoors is because of spectrum because now I know it isn't down to a greater dli or ppfd Edited June 27 by blackpoolbouncer.
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Increasing the PPFD at a given photoperiod or increasing the photoperiod at a given PPFD increase the DLI and typically yields. For instance, increasing the PPFD from 200 to 290 μmol m −2 s −1 increased shoot fresh.

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But i think i overlooked the dli and the actual ppfd. A quick search of the web shows that a cree 3000K 80 cri led has a conversion factor of 0,0149... this is the number to be multiplied by the lux reading you're getting. It is QER/LER. In this case 328.322735/4.867319958 which roughly corresponds to 0,0149.
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PPFD (umol/s/m2): Time (hours): Calculate.Result: In horticulture applications a PAR meter can be used to take light readings at the plant canopy and get PPFD (μmol·m-2·s-1) data. The PPFD data can be inputed into the calculator above to get the corresponding DLI (mol·m-2·d-1) result over a certain photoperiod for that particular point. .. Note: In this calculator radiant flux is.
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Usually during veg, when you have 200umol , plants will start to grow, they will grow very nice if the ppfd reaches around 400~600umol. During flower: from 500umol, plants will flower, but they will flower really good around 700~900 umol.Data over 900~1000~2000 actually have not too much difference for.
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The range of APPFDs that plants grew under in this trial was 135-1430 µmol·m −2 ·s −1, corresponding to DLIs ranging from 7.8 to 82.4 mol·m −2 ·d −1. Notably, there were no signs of transplant shock or light stress, even in plants placed under the highest LIs which were exposed to up to 7 times higher LI than in the propagation stage.
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Take those two numbers and plug into a DLI calculator ( many on Google) - or calculate yourself with DLI = 3.6 · 10^-3 · PPFD ( umol / (m^2·s) · light-hours/day. Optimal DLI in Flowering Stage = ~40. But always pay more attention to how your plants look than this number. Search: Ppfd For Flowering. large bull horns for sale usmc mcc list.
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The average PPFD and DLI (Daily Light Integral) will depend on the size light, hanging height, and area it is covering. Please choose the correct model from our selection of PhytoMAX-3 Series LED Grow Lights and enter the size of your growing area here: Light model: PhytoMAX-3 24S PhytoMAX-3 20S PhytoMAX-3 16S PhytoMAX.
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PAR/PPF/DLI Calculator Photosynthetically active radiation (PAR), Lumen, and Radiant Flux conversion Calculator This calculates lighting as it is relevant between plants and humans using actual spectrum curves. This should be accurate for LED based grow lights as well as any other type of lighting as long as the spectrum is known.
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Our Photone grow light meter app measures photosynthetically active radiation (PAR) as PPFD in µmol/m²/s, calculates the daily light integral (DLI) in mol/m²/d, and measures illuminance in foot-candles or Lux. It also allows you to measure light temperature in Kelvin which can help you determine if a light is suitable for fruiting and. May 19, 2015. #7. So if you use the constant of the warm white fluoro, 75, you get 25000/75 = 333 PPFD. But who knows, that constant is a tricky thing to guess at and the accuracy of the luxmeter is abysmal LOL. Using the constant of the sun, 25000/50 = 500 PPFD. Yes good catch!. If you buy a lux meter just take a reading 18" away from the light and whatever lux reading it says will be the equivalent of 290 umols/m2/s. These Par Maps below will tell you all you need to know for growing. I would say round 22-24.

Converting PPFD to Usable PPF . This is a great resource for people like me who are about to embark on their first grow and I wanted to say a word of gratitude to all those involved who have made it possible. I have 2 identical LED lights in my 4×4 tent. Using the PPFD footprint map supplied by the mfg.

Lux to PPFD / PPFD to Lux Online Conversion Calculator. PPFD (Photosynthetic Photon Flux Density) is the main value using to understand the lighting level of grow lights at a point. PPFD can be measured by a PAR meter. PPFD is indicated by μmol/m2.s symbol. Lux-PPFD online conversion calculator is ready to help you to convert values easily.

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Similarly, if the DLI and PPFD are known, the photoperiod can be calculated. See the equations below for how these three parameters (PPFD, DLI, and photoperiod) are interconverted. Useful References. Interactive U.S. DLI Map of natural lighting conditions to calculate the amount of required greenhouse supplemental lighting: https://arcg.is/0qqiSS. Lux to PPFD / PPFD to Lux Online Conversion Calculator. PPFD (Photosynthetic Photon Flux Density) is the main value using to understand the lighting level of grow lights at a point. PPFD can be measured by a PAR meter. PPFD is indicated by μmol/m2.s symbol. Lux-PPFD online conversion calculator is ready to help you to convert values easily.

In this study, diurnal chlorophyll fluorescence monitoring was used to characterize the photochemical responses of 'Green Towers' lettuce (Lactuca sativa L.) to photosynthetic photon flux density (PPFD) and daily light integral (DLI) in a greenhouse during a production cycle. Plants were monitored continuously for 35 days, with chlorophyll.

  • Enter the name of your plant below to quickly find its recommended PPFD and the recommended daily light integral (DLI). Plant. PPFD (µmol/m²/s) DLI (mol/m²/d) African Violets. Streptocarpus. 70 – 300. 4 – 14.

  • Let's also assume that the PPFD is 750µmols/m 2 /sec. You'll refer to this value as "750 micromoles per square meter per second". DLI: is the PPFD throughout the day. It is measured in moles/sq. meter/day, or mol/m 2 /day. DLI outdoors usually ranges from 4 - 60+ mol/m 2 /day. Greenhouse DLI values rarely top 25mols/m 2 /day. During propagation, light should be managed based on the instantaneous intensity (PPFD), but we can also consider DLI, as research has shown that rooting of some crops can be delayed when the DLI is below 4 or 5 mol/day. For seedlings, a DLI of 8-12 mol/m2/d1 or PPFD of 100-300 µmol/m 2 /s¹ is recommended as a minimum for quality plug production. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux density in mol m-2 d-1 Enter PPFD: Enter Hours :.PPFD PPFD (Photosynthetic Photon Flux Density) measures the amount of micromoles of photons striking a square meter per second (often written as umol/m 2 /s, μmol/ m 2 /s, or μmolm-2 s-1). PPFD) allows to estimate the energy value of light more. Usually during veg, when you have 200umol , plants will start to grow, they will grow very nice if the ppfd reaches around 400~600umol. During flower: from 500umol, plants will flower, but they will flower really good around 700~900 umol.Data over 900~1000~2000 actually have not too much difference for.

Calculator from PPFD (μmol/s/m 2) to DLI (mol/m 2 /day) Typical PPFD and DLI values for crops. In our Grow Light Calculator and our Grow Light Tests and Reviews, we provide calculations for Grow Light Efficiency, Coverage and Harvest Potential. In this article, I explain how our calculations work and the science behind them. Convert PPF to lumens and vice versa. Calculator from PPFD (μmol/s/m 2) to DLI (mol/m 2 /day) Typical PPFD and DLI values for crops. Multiply the PPFD by the conversion factor to get Lux. For example, full sunlight is 2000 µmol m-2 s-1 or 108,000 Lux (2000 ∗ 54). Lux to PPFD (µmol m-2. Quantum Sensors measure measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux density in mol m-2 d-1 Enter PPFD : Enter Hours : DLI:.

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The PPFD Meter uses the phone's built-in ambient light sensor (ALS) to collect information on each photon that hits the plant canopy. You can also use a Bluetooth sensor. We support seamless integration with UNI-T UT383 BT over Bluetooth Low Energy. ... PPFD Meter converts LUX readings from the sensor into PAR and calculates PPFD and DLI.

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  • The units of DLI are mol/m 2 -day. A two-step process is recommended, first convert the PPFD to mol/m 2 -hour, then calculate the number of hours needed to achieve a desired DLI dose. Continuing our example, the nominal PPFD from above is 150 μmol/s-m 2 and the unit conversion factor (0.0036) gives 0.54 mol/m 2 -hr.

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Because they tend to be grown entirely on the lighting schedule used for vegging photoperiods. When a photoperiod is flipped to 12/12, you need more PPFD to get the same DLI as you had on 18/6, 20/4, or 24/0. With an autoflower, there's no flip so your PPFD can be lower. 3 people like this catweazle1 Resin Coated Subscriber 3,889 2,699 posts.

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From the dashboard click on a Pulse Pro device. Click the " Spectrum" tab just below the device's name. Press the blue button in the bottom right corner to have the app watch for new readings. Press and release the black button on the device itself. Hold the device as horizontal as possible in the location you want to take the reading for about. When actually talking about total light for the plant what matters is the brightness at the leaf, in PPFD and the time the light is there, if you integrate the PPFD over the time you can get the Daily Light Integral (DLI), this is a measure of how much light hits the leaf in a day. Per the wikipedia "full sun" is 26 mol/day per sq meter. Calculator from PPFD (μmol/s/m 2) to DLI (mol/m 2 /day) Daily Light Integral (DLI) is a measure of the aggregate amount of PAR light a surface receives over the course of a day. This is a very useful metric for determining whether a particular spot.

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ok lets say you have 12/12.running at 250 ppfd.then you multiply 250 * 60 to get radiation per minute.then you multiply the result by 60 again to get per hour.then you multiply by the 12 hours of.

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There is a great app for your phone that measures ppfd and DLI ... When I get to mid flower I want 900 PPFD at the top and hope for 500 as far down as I can get it, by late flower I will bump it up to 600 at the lowest bud site and keep an eye out for light burn on the top, Above 1200 and it can get ugly fast if you dont have CO2..

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THE actual PAR light range is from 400nm to 700nm. UV and infrared wavelengths are also included in grow light spectrum because they have specific benefits to the plants. Ultraviolet light has 3 distinct ranges (UV-A, UV-B, UV, C). But only UV-A is good for plant growth. The measure of UV-A light ranges from 30-400 nanometers. Early bloom 500 umol / DLI 36.00 moles per day. Mid bloom 650 umol / DLI 46.80 moles per day. Late bloom 750 umol / DLI 54.00 moles per day. Ripen 400 umol / DLI 28.80.

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  • DLI is usually calculated by measuring the photosynthetic photon flux density (PPFD) in μmol·m −2 ·s −1 (number of photons in the PAR range received in a square meter per second) as it changes throughout the day, and then using that to calculate total estimated number of photons in the PAR range received over a 24-hour period for a. .Because it's cheap and relatively accurate.

  • Aug 26, 2022 · This means that PPFD specifically measures the light available to plants for photosynthesis and thus, impacts their growth. Daily Light Integral (DLI) The daily light integral (DLI) is the total sum of photosynthetic lighting intensity measured as PPFD over a 24 hour period. In short, the DLI is a measure of usable light your.

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  • Usually during veg, when you have 200umol , plants will start to grow, they will grow very nice if the ppfd reaches around 400~600umol. During flower: from 500umol, plants will.

  • DLI = PPFD x (3600 x photoperiod)/ 1,000,000. 3600 = seconds in an hour. Photoperiod = number of hours of light. 1,000,000 umol = 1 mol. Here's a handy online DLI calculator. All you need to do is input the PPFD of your light source and the number of hours that you will run it.

If the photosynthetic light intensity stays the same for the entire 24-hour period, DLI in mol m−2 d−1 can be estimated from the instantaneous PPFD from the following equation: μmol m−2 s−1 multiplied by 86,400 (number of seconds in a day) and divided by 106 (number of μmol in a mol). PAR, PPF, PPFD, DLI are four of the major factors you should consider when growing cannabis indoors. These factors will help you choose the right #LEDgrowlight for #CannabisCultivation. PAR Photosynthetically Active Radiation (PAR) is not a light intensity measurement but rather it is the range of light wavelengths on the light spectrum where plants responds best during photosynthesis.

Quantum Sensors measure measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux density in mol m-2 d-1 Enter PPFD : Enter Hours : DLI:.

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These acronyms - PAR, PPF, PPFD - sit alongside terms like watts, lumens, photon efficiency and LUX, and they are all critical to helping you create the perfect grow space and yield. This isn't as complicated as it sounds. In this guide, we explain exactly what PAR, PPF and PPFD mean, and exactly why you should care. The units of DLI are mol/m 2 -day. A two-step process is recommended, first convert the PPFD to mol/m 2 -hour, then calculate the number of hours needed to achieve a desired DLI dose. Continuing our example, the nominal PPFD from above is 150 μmol/s-m 2 and the unit conversion factor (0.0036) gives 0.54 mol/m 2 -hr. The DLI acts as the main measure of the actual amount of light the plant receives and is a product of light intensity (PPFD) and light duration (photoperiod). CO₂ Supplementation. Our cannabis ... Lux to PPFD ( µmol m-2 s-1) Multiply the Lux by the conversion factor to get PPFD. For example, full sunlight is 108,000 Lux or 2000 µmol m-2 s-1.

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Good Evening ICMag, Long time lurker first time poster. I built myself a DIY COB Light for my 2x2 Tent and wanted to make sure I wasnt over/under powering. The tent is only about 63" so I am a bit height restricted but I have good airflow so no heat issues. The light I built is 4 Cree CXB3590s.

DLI is the number of the photons in the wavelength range of 400-700nm (PAR wavelength) measured in mol/ (m2.day), which suggests that DLI is the cumulative number of the photons in PAR wavelength range per day, and according to the unites of DLI and PPFD, we could get the formula that is DLI=3.6*10 -3 *PPFD*hours/day.

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Convert that to seconds, since PPFD is measured in μmol/m 2. 12 hours = 43200 seconds. Divide DLI by number of seconds for number of mol/m 2 s. 30/43200 = 0.000694444 mol/m 2 s. Then multiply by 1 million (10 6) to get μmol/m 2 s Target PPFD is 694.44 μmol/m2s. In horticulture applications a PAR meter can be used to take light readings at the plant canopy and get PPFD (μmol·m-2·s-1) data. The PPFD data can be inputed into the calculator above to get the corresponding DLI (mol·m-2·d-1) result over a certain photoperiod for that particular point. Active Grow provides detailed PPFD data at various.. PPFD measurements at various points across the. PPFD and DLI question. Hello. I have been trying to find out the PPFD and DLI value of my growlight (Agrobrite T5 96w 2' 4-Tube). My understanding is limited and its hard to understand this formula. If you can help me calculate it, and maybe link me to a easy to understand guide, i will be very happy. Vote. Your ppfd is high enough the plants could use supplemental CO2 assuming they have enough nutrition. There are also factors like environment and how the plants are being fed. Hydro or soil? Plants grow slower in soil because you're relying on microbes as opposed to being force fed. Photosynthesis really slows down when CO2 ppm dips below 150.

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Quantum Sensors measure measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux density in mol m-2 d-1 Enter PPFD : Enter Hours : DLI:. Our PPF value of 15 umol/s is equivalent to 15/0.0225 = 667 umol/m2/s of PPFD. Now let's assume we place the 50W light a little further away, at say 30cm and that it is illuminating an area of 0.09m2 (4x larger) as a result. The PPFD would be 30 / 0.09 = 333umol/m2/s. Whoa - the intensity of light delivered by the 100W globe is twice as much again!. DLI=Light-hours x (PPFD x 0.0036) "Whats my DLI value with my current light schedule?" PPFD = DLI /(Light-hours x 0.0036) "How much PPFD do I need to get a DLI of 35?" to then calculate backwards, through PPF (PPF= PPFD x area) to find the number of COBs I need to cover that PPFD; Whereby, I have nooo idea where the .0036 comes from!!. A ppfd of 700 for 24 hours a day gets you to the maximum DLI of 60 with a low chance of stressing the plants. With photos you would need a ppfd of 1400 to hit your max but without CO2 your pants get stressed above the 1000-1200 ppfd range generally. As for VPD I try to stay as close to the charts as possible, I have temperature and humidity. The mathematical formula that defines the relationship between DLI and PPFD is as follows: The following chart shows the optimal Daily Light Integral and equivalent PPFD for six different plant species for a 16 hour photoperiod: *Assuming the PPFD is kept constant over the course of 16 Hours. Applying lighting mathematics to your grow operation. If the electric lights are on continuously (24 hours), the hourly PPFD must be multiplied by 24 to get the daily PPFD: 0.0036 mol m -2 h -1 = 0.0864 mol m -2 d -1. Converting PPFD to Usable PPF. This is a great resource for people like me who are about to embark on their first grow and I wanted to say a word of gratitude to all those involved who have made it possible. I have 2 identical LED lights in my 4×4 tent. Using the PPFD footprint map supplied by the mfg. I can calculate average PPFD.

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Adjusting your fixtures’ height and density will affect the PPFD at your crop canopy. Daily Light Integral (DLI) DLI is the amount of PAR that lands on a square meter surface over a 24-hour period. DLI is measured in moles of light per square meter per day (mol·m −2 ·d −1). You can think of this as the accumulation of PPFD over a full day. . About PAR, PPF, And PPFD. If you have been researching for horticulture lighting then you have likely read and listened variety of units of lights which lighting manufacture use. Some of terms like, PAR, PPF, PPFD, DLI, Lumen, LUX, food candle, photon efficiency. The PPFD is the flux density photosynthetic photon. The direct analogy to lux , the PPFD is expressed in micromoles per second per m² (µmol / s / m²). It allows quantifying on a given surface, at a given distance from the lighting, the number of photons PAR incidents per second. This is an essential measure because it indicates the amount of.

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Part 3 of Measuring Photosynthesis & Consumer Interpretation: PAR, Lumens, PPFD & DLI. Words and images by @SuperFunker. Part 3, PPFD Photosynthetic Photon Flux (PPF) is the total amount of Photosynthetically Active Radiation (PAR) emitted by a light. Measured in micromoles per second (µmol/s), PPF provides a general understanding of a light's. DLI is the number of photons in PAR range that are delivered to a square meter over the course of a day.It is often calculated by measuring the PPFD throughout the day then using this data to estimate the DLI. This is an important metric to know as different types of plants require varied DLI for optimum growth. If the photosynthetic light intensity stays the same for the entire 24-hour period, DLI in mol m−2 d−1 can be estimated from the instantaneous PPFD from the following. I'm trying to dial in some numbers for the seedling stage. Weeks 1-2. There seems to be some disagreement as to ideal DLI's. I've heard everything between 12 and 30 for DLI! That is a huge range! What has worked for you?. For greenhouse growers, use the inside DLI calculated in STEP 3. Example: If the target DLI is 30 mol/m2/d and the inside DLI is 20 mol/m2/d, then your required supplemental DLI is 10 mol/m2/d. STEP 6: Calculate Output From Lights. The best way to do this is with a PAR meter. Take PPFD readings from multiple locations to create an average PPFD. This grow light will be fine for my tomato seedlings (which optimally take a minimum of 300 PPFD for a 13.0-17.3 DLI), but this light cannot provide enough PPFD intensity for mature tomato plants (takes around 700 for optimal fruiting). Tomato seedlings can take up to 700 PPFD without damage.

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I'm trying to dial in some numbers for the seedling stage. Weeks 1-2. There seems to be some disagreement as to ideal DLI's. I've heard everything between 12 and 30 for DLI! That is a huge range! What has worked for you?. Research at the University of Georgia found that not all DLIs are the same: greenhouse crops grow faster with lower photosynthetic photon flux density (PPFD, the amount of photosynthetic light reaching the plant) and longer photoperiods. This can result in significant lower costs and higher revenues. HOW THIS WORKS. The average PPFD and DLI (Daily Light Integral) will depend on the size light, hanging height, and area it is covering. Please choose the correct model from our selection of PhytoMAX-3 Series LED Grow Lights and enter the size of your growing area here: Light model: PhytoMAX-3 24S PhytoMAX-3 20S PhytoMAX-3 16S PhytoMAX. If the photosynthetic light intensity stays the same for the entire 24-hour period, DLI in mol m−2 d−1 can be estimated from the instantaneous PPFD from the following equation: μmol m−2 s−1 multiplied by 86,400 (number of seconds in a day) and divided by 106 (number of μmol in a mol).

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Early bloom 500 umol / DLI 36.00 moles per day. Mid bloom 650 umol / DLI 46.80 moles per day. Late bloom 750 umol / DLI 54.00 moles per day. Ripen 400 umol / DLI 28.80. PPFD is a measure of the density rather than the quantity of photons. The data reported in PAR maps is PPFD data. PPFD values are properly reported as µmol/m 2 /s. If you see the "m 2 " in the label, then it is PPFD data which cannot be used in the Grow Light Calculator . Use Photon Efficiency Data. It is more common to find a Photon. The units of DLI are mol/m 2 -day. A two-step process is recommended, first convert the PPFD to mol/m 2 -hour, then calculate the number of hours needed to achieve a desired DLI dose. Continuing our example, the nominal PPFD from above is 150 μmol/s-m 2 and the unit conversion factor (0.0036) gives 0.54 mol/m 2 -hr.. kahuna 6400 user manual. Cannabis is one of the few plants which flourish under more than 950 to 1,200 photosynthetic photon flux density (PPFD) in full bloom, i.e., 41 to 51 daily light integral (DLI). However, several factors in a controlled, sole-source lighting environment need to be optimized to transition a cannabis plant to this level of high intensity lighting. About PAR, PPF, PPFD and DLI. When LEDs arrived on the market, their tremendous efficiency and money-saving potential changed the playing field, and lumens, lux and footcandles finally became obsolete metrics for determining light requirements for plants. Recently, people have began referring to PAR, PPF and PPFD as ways to measure light in. A tomato plant (25 DLI) would, as an example, need 500 PPFD over 14 hours or 700 PPFD over 10 hours. A standard double layer window absorbs 25-50% sunlight depending on the sun’s angle. 1400 PPFD reaching the glass window would only result in 700-1050 PPFD reaching the actual plant.Here's a video of another light-obstructing material test.

Quantum Sensors measure measure the instantaneous photosynthetic photon flux density in µmol m-2 s-1. Use Calculator below to convert instantaneous PPFD µmol m-2 s-1 to DLI photosynthetic photon flux.

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Multiply the PPFD by the conversion factor to get foot-candles. For example, full sunlight is 2000 μmol m-2 s-1 or 10,020 foot-candles (2000 ∗ 5.01). Dual-Ended High Pressure Sodium (DEHPS): ePapillion 1000 W.