So I've got a 2x4x6 foot tent coming in the mail, and i know 400w ain't gonna cut the mustard with 4 feet width. I'm a LST type grower, use soil, and have mostly done single plant grows, but am contemplating doing SOG if I can figure something out. Im playing with the idea of using a 600w, but can't find anything in cmh. So then I got to thinking about running two 205w philips all start CMH, which run on magnetic pulse start halide ballasts. So my question is, should I run the 600w? If so, how much more heat is a 600 then a 400? 600 seems to be a great wattage, and options out there are great for bulbs, but bulbs get a bit pricey at the 600w range. The pros to that are more light and be able to cover my new space properly. Is 600w overkill for a 2x4 space? I love to scrog and LST, mostly LST. Now if I decide to run two ceramic metal halides, I'll be at 405w for bulbs, will be a lot cooler, temp wise, and I can have even light distribution with two light sources. The downsides are magnetic ballasts, multiple ballasts, bulbs will be about 70 each, and I would need to find two identical hoods to house the new bulbs. So what say you blades?
So I decided to go with two 205w philips allstart cmh. It'll be cooler then a 600, and each light can cover a 2x2 footprint. Not near the same lumens, but heat is why I can't go 600. Now I run into another question with dual bulbs. Should I maybe run an hps and cmh? Side by side? Start cuts on te cmh side and end on hps side?
so much work dealing with the heat. I came on to look and see what you are doing and all I can think is the crap you are going to go thru with the heat. so glad i am not there anymore. Look forward to seeing your grow.