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Mars Hydro
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Hi Danky, 2pcs MarsII400 will cover 2.5'x5' and 1pcs Reflector144 will cover 2'x4'. Both option will be enough. The difference lies in the light intensity. The gap between MarsII leds is narrower than that of Reflector so the light intensity of MarsII is stronger than Reflector. Because of that, Reflector will run a little cooler than MarsII. The draw power of MarsII400 is about 190w. 2pcs MarsII400 will give you about 47w/sqft. It will not be overkill. 2pcs MarsII700 will be a little overkill.
Would two Mars II 400w or would one Mars Reflector 144x5 be better for a 2'l x 4'w x 5'h grow space? At first I was leaning towards the 144x5 Reflector series but then I read that the Mars II line has better light penetration? Is that correct? Also, would anything above a Mars II 400w be overkill for this space? Maybe two Mars II 700w (one Mars II 700w won't cover 4' from what I've read)? Thanks for any advice, lots of good info on this site!