Draw Watt: 136 Watts
HPS/HID Watt Equivalent: 300 Watts
Creative math. You cannot create 300 watts from 136 watts without defying the laws of physics.
What they do is use the 5 watt LEDs add up the number of LEDs and multiply by 5.
There is no way they are powering those LEDs at their max.
Can you get 1000 PPFD from a 300 watt HPS? No. When it's too good to be true, it's not true.
The foot print is too small, you would have very poor uniformity.
90° lenses directs the light down and the edges of the grow area will not get much light.
What is this really? 136 wall watt. Power supply efficiency is likely less than 90% leaves 122 watts
A Bridgelux CoB 31v 1 amp (31 watt) = 2232 lumens
122 wall watts / 31 watts = 3.9 CoBs * 2232lm = 8784 lumens.
51 lumens per dollar.
No. You do not want this fixture.
You cannot beat strips of LEDs. They spread the light and the heat generated.
For $250 you could build a kick ass fixture with Bridgelux Gen2 EB strips and a Mean Well driver.
BXEB-L1120Z-35E4000-C-B3 typical lumens per watt = 175 lm/W $14ea x 7 = $98.00
1.4A x 7 ≈ 10A
Max Vf = 41V.
A Mean Well driver would run ≈ $140-$150.
7 strips @1.1A = 7500 lm = 53,536 (plenty of margin)
A 400W Phillips HPS is about 50,000 lm
You can run these at 1.4 Amp
You can easily get 60,000 lumens out of 7 strips. 240 lumens per dollar.
They run cool and do not need a heatsink.
