My DIY LEDs

Terp;2640510 said:

Led light building has become very easy these days so I thought I would share mine with you guys to inspire you to tackle it yourself. You can have a rock solid light that can dominate anything you can buy prebuilt.

I have built 4 so far and working on #5

Here they are:

10x cxb3070 AD 3000k ~ 2x HLG-185-1050C Designed for a 2x4 space

365 (dissipation W) * .5128 (COB efficiency) = 187 PAR W
187 PAR W/8 ft² = 23.4 PAR W/ft²
23.4 * 10.7 (ft² in 1 m²) = 250 PAR W/m²
250 * 4.88 (umol/PAR W for CXA 3000K) = 1220 PPFD.

I have 2 of these lights. (heatsink config diff thou)

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8x Cree CXB3590 CB 3000k ~ 2x HLG-185-1400C Drivers


390 (dissipation W) * .5167 (COB efficiency) = 202 PAR W
202 PAR W/8 ft² = 25 PAR W/ft²
25 * 10.7 (ft² in 1 m²) = 267.5 PAR W/m²
267.5 * 4.88 (umol/PAR W for CXA 3000K) = 1305 PPFD

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Veg Light :8x Vero 18 5000K - 1 HLG-185-700c

197 (dissipation W) * .4723 =
93 Par W/8FT² = 11.62 PAR W/ft²
11.62 x 10.7 = 124.38
124 * 4.49 = 558 PPFD

All these lights are dimmable, The flower lights here puts out more than 1000 PAR any place on the canopy (even the edge because Cobs are equally spaced). Heat sinks are cool to the touch when running.If you dont have a light hitting at least 900 - 1000 PAR in every spot, your not growing to your full potential. Here is a government study done on cannabis showing the photosynthetic response to the amount of PPFD.

Always know what your lights PPFD is and if you dont know what that is, google it and find out. Its very important.

The pics are in my gallery for those interested.

Feel free to ask me questions about my lights or post pics of your own builds and specs here

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