2 - 400 should be more than enough.
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What benefit does CMH have over HPS/MH combo
I have 2 400w HPS/MH combo ballasts with reflectors.
Right now I'm not using the MH for Veg because of the heat generated from the lamps is too much for this small closet. I basically have a 300W CFL system hanging in there now that generates minimal heat.
The 2 HPS 400's are probably gonna be good enough for flower and they go into a bigger flower room. Which I still need to clean up from my last grow.
The question is do I use both as HPS or keep 1 MH / 1 HPS in there?
You had me at ten pointer
...The CMH is also great for veg and bloom, so my answer would be to run 2 400w CMHs...
I'm probably gonna stick with the 2 50,000 Lumen 400W HPS bulbs for flower since I have em and I'm flippin the switch next week after I harvest the remaining plants from another grow I have.
I may try the CMH bulbs on the next grow. Thanks Horse