danlu_gt Posted February 28, 2017 Author Share Posted February 28, 2017 Possible to share what LEDs you ordered on Amazon/Ebay? I got 2 of these but looks like they're not selling on amazon anymore: https://www.amazon.com/gp/product/B01GFWZHBI I would probably go with this one. Most of these advertised 300W are actually not 300W. There are 100, 3W LEDs but are not driven to 3W ea because the only heatsink is the 3mm aluminum PCB with cooling fan. I'm guessing like the one I got from amazon, it's only drawing 70w-80w. For our purpose, that's still too much so will need to modify it which will void the warranty. If like the one I got, it has 2 drivers so it would be an easy mod to reduce to 35w-40w which would be ideal for ATS. http://www.ebay.com/itm/300W-LED-Grow-Light-Lamp-Full-Spectrum-Panel-Veg-Flower-for-Hydro-Indoor-Plant-/351823817418?hash=item51ea556aca:g:U9kAAOSwopRYhV9g Quote Link to comment Share on other sites More sharing options...
danlu_gt Posted March 1, 2017 Author Share Posted March 1, 2017 My current ATS is 24"Lx8"Wx16"H. If you're making smaller ATS, you can probably go with much smaller/cheaper LED grow lights. Quote Link to comment Share on other sites More sharing options...
danlu_gt Posted March 8, 2017 Author Share Posted March 8, 2017 Update: I made a typo.. not 2 pints of algae every 2 weeks. It's almost 2 quarts! Quote Link to comment Share on other sites More sharing options...
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