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Is 3 x 315 cmh in 4x8 tent enough light or would the yield be lot better with 2x 630 cmh duel bulb lights?

Hey lucky Luke What sort of gpw is that set up capable of averaging? Would that bulb be first choice next time? The hortivision bulb has the most uv and blue light out of the 3k range bulbs above, which is nice. The sun plix agro has a nice looking spectrum, bit more red, bit less uv and blue.

I’ve found only limited choices of de 630 cmh bulbs available in Australia so far: Lumatek 3100k agro, 4200k Hortivision 3000k Sun Plix 3000k, 3000k agro, 4200k Indoor Sun 4200k I plan to run a Hi Par de 630w cmh low frequency square wave ballast. Opinions?