Originally Posted by Itsmychoice
I know it might be late but the single vertical bulb 315 fixtures with the ballasts remotely mounted out of the room are unbeatable. I do 6 over a 8x14 for veg. Hang them about 4' over the canopy and you will grow bushes. In flower it's 2.5x2.5' about 2' over the tops. I think veg is probably closer to 5x5. The 3100 bulbs seem to make them a little less stretchy. I mix the 3100 and the 4200k in veg for that reason. 3100 on the ones just out of the cloner and the ones in the biggest containers. 4200 for the middle. It works for my set and supplies for 12k flower. The cloner prefers a single bulb t5. T5 is hard to beat for plants less than 1' tall but after that they just don't have the penetration.
So 4ft over the plants and the light is still intense enough for tight nodes? I've been trying to get them as close as possible without burning but its a pretty small footprint. And I'm still not sold that the nodes are any tighter unless directly underneath.
I bought 2 of the 315cmh with vertical bulb hoods. It allowed me to turn the other two 1k MH up to 100% and holds my temperature at a perfect 75 (down from 81)
The MH are still too hot at the canopy without ac to get close enough to prevent stretching though, so looking at upgrading all 4 reflectors with the conversion kits and running six 315s in the 10x10 room. Bit of an awkward pattern.. and with 1,800 watts I'll probably be a little low on heat come winter if 2,600 watts holds it perfectly right now.
I guess im still a bit confused as some people say 315s are the ultimate veg light. Others are saying a watt is a watt.. If the spectrum is twice as good, so a 315w cmh=600w MH would it be safe to assume my 1,800 watts of cmh will give me enough light to almost match 4,000w of MH?
I'm thinking about getting one or two t5s for the side and I could just rotate plants underneath each time I water to help stack some nodes at the top. I'd love to run all t5s but it sounds like they won't penetrate enough for a 3-4ft plant and it just seems like a ton of lights to deal with.