Here I will post all that was wrote that I am getting this from. Mind you I may also be misinterpreting this and is why I was asking questions about this light. Give me just a second...

This is a quote from someone else's knowledge and teaching that I am pasting here....

Plants peak at 1500 umoles/m²/second. A 1000w HPS using a digi ballast with an eye hortilux super HPS puts out around 1928 ppfd dead center of the broadcast area at 18".

Whats more important is the DLI. That's Daily Light Integral. That's the amount of photons received over a 24 hr period in a square meter. So using the chart (

https://growace.com/blog/the-best-hps-grow-bulb-test-comparing-6-brands-on-par-output/) for the ppfd output of a 1000w Eye Hortilux HPS (at 27") we can calculate the DLI. Mind you our results are a rough estimate due to the testing being done at a weird height of 27" and calculated in. 4' x 4' area instead of a 3' x 3' area. But anyways. Add up all the numbers and we get roughly 6370 based off the 9 measurements taken. Average this out. 6370 ÷ 9 = 707 umoles/m²/second. So we take this reading and multiply it by 3,600(seconds in an HR) x hrs of light (well use 12) and divide that by 1 million (number of moles in a umole) to get an estimated DLI.

So well start with the 12 hr DLI for a 1000w HPS;

707 x 3600 = 2,545,200

2,545,200 x 12 = 30,542,200

30,542,200 ÷ 1,000,000 = 30.542

30.542 moles/m²/day is the DLI of a single 1000w HPS in a 4' x 4' area during flower.

Now lets check out the ViparSpectra PAR600(A pretty common 600w LED) the PAR footprint for a 3'x3' can easily be found for this particular light. Add all the PPFD readings together and we get 4640. Now there were 21 readings. So 4640 ÷ 21 = 221 (220.95 to be precise).

So well only do the DLI for 12 hrs:

221 × 3600 = 795,600

795,600 × 12 = 9,547,200

9,547,200 ÷ 1,000,000 = 9.54

9.54 moles/m²/day is the DLI of a single PAR600 LED in a 3' x 3' area during Flower. It'd take 4 of these to touch a single 1000w HPS.

Lets Check out the ChilLED 400w Gen 2. Another LED. They dont give a PAR footprint for their product but instead a Sphere Test. These results show that this light puts out 1043.28 PPFD. So we'll use that number as the sphere is a 60" diameter.

1043 × 3600 = 3,754,800

3,754,800 x 12 = 45,057,600

45,057,600 ÷ 1,000,000 = 45.05

45.05 moles/m²/day is the DLI of a single ChilLED 400w LED in a 3' x 3' area in flower. One will effectively replace a 1000w HPS.

Now lets use the Fluence SpyderX. They tote 909 PPFD across the canopy. They're pretty accurate with this so well use 909.

909 x 3600 = 3,272,400

3,272,400 x 12 = 39,268,800

39,268,800 ÷ 1,000,000 = 39.26

39.26 moles/m²/day is the DLI of a single Fluence SpiderX LED in a 3' x 3' area in flower. One will effectively replace a 1000w HPS.

Lets check the PlatinumLED P600. They used to advertise a PAR footprint but no longer do and I cannot find it. They only offer the central PPFD reading. At 18" this is 1500 PPFD. I wont be using this specific ppfd reading as it isn't fully accurate in my opinion. I will remove a full 1/3 of that as I think that is fair based on the HPS readings at 27" for the center and that the average was 700. That's about 30% decrease.

1000 × 3600 = 3,600,000

3,600,000 x 12 = 43,200,000

43,200,000 ÷ 1,000,000 = 43.2

43.2 moles/m²/day is the DLI of a single PlatinumLED in a 3' x 3' are in flower. One will effectively replace a 1000w HPS.

Now well go with sunlight yay!

The sun has an average ppfd on a clear day of 750. Mind you this varries greatly based on weather, airborne particles and geographical location as well as elevation.

750 x 3600 = 2,700,000

2,700,000 x 12 = 32,400,000

32,400,000 ÷ 1,000,000 = 32.4

32.4 moles/m²/day is the DLI of the sun.

Now for the standard of 1500 umoles/m²/second that plants peak at. As in this is roughly the highest number plants can use. And this is with a perfect environment and CO2 levels at 1000ppm.

1500 x 3600 = 5,400,000

5,400,000 x 12 = 64,800,00

64,800,000 ÷ 1,000,000 = 64.8

64.8 moles/m²/day is the peak DLI in a 3' x 3' area for plants in prime conditions. More than double what a single HPS can produce.

As long as the manufacturer provides you with a PPFD reading or a 3rd party has then you can very easily calculate the DLI. This will give you a better idea of how the light will perform. Also take into consideration the wattage used. Sure a 1000w HPS has a pretty high Number of 30+ but what about heat?? What's the cost of the light? Hows the Spectrum? Expected Lifespan? Whats the wattage draw? How effecient is the light (PPFD per watt)?

The higher the DLI the better. But mind you without CO2 enrichment plants peak at around 700ppfd/m²/second. Which comes out to a DLI of 30.24 moles/m²/day. Your goal is to hit 30+ DLI regardless of your lighting. This is just a baseline and is not 100% accurate as lots of manufacturers do not supply this info and it can be very difficult to locate.