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- It does not even come close to replacing a 1000w HPS. - 5'5' - maybe for veg. For flower, a 2'x4' works out nicely. - Add a red next to it using either an LED or smaller HPS for best results. - I would recommend this light. Doesn't heat the room, grows uniform, nice plants from start to...

I'm a big fan of Indagrow 420 lights, but we need to be honest here. The DO NOT perform anywhere near a 1000w HPS. In fact, a 600HPS done side by side gives a higher yield. Not by much, and a 600 actually uses about 650watts, plus added ventilation. Compare to a 400w MH though, this thing...

Is there any evidence that one brand is better than another? It appears (at least superficially) that most of the 400w lights offered by iGrow, Inda-gro, the Sun-Light series, generic eBay stuff and so on are the same Chinese bulbs... maybe mounted onto something in America to call them...

You are fucking awesome for doing this so quickly. I'm surprised they only use 7 watts. Can I ask the length of the rail? Assuming a 25%+ increase for only an extra 1% on wattage with a 600 that sounds like a spectacular savings on the watts to gram expense.

Has anybody measured the energy use of their light movers? Recommendations for something reliable that uses fairly minimal watts?