Aqua Man said:

If you can get relatively even spread HLG. If not the other. How much height do you have to work with?

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LEDhead said:

8’ height so it should be plenty of room but yes that’s my thoughts.... the HLG has a higher output which means more ppfd but it’s only 38.6” In length so just over 3 feet but will decrease in the corners as were the GC has a lower output per light with lower ppfd but with 2 I’d get a complete coverage from end to end in my area with an even canopy.
Also, although the 2 GC’s have a more even canopy the HLG still out preformed it in the corners almost as much as the center of the GC. So my end conclusion is the HLG only because the ppfd is greater at the end compared the GC‘s center ppfd readings
Here’s the readings at 24” & 12”
HLG Scorpion Diablo first
GC e-420 second

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Aqua Man said:

Yeah I think 8' should be fine.

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