Yes, Right now I only have one 400 HPS (PL Light system). Pricey. I hate to have bought it for nothing only to buy another cheapo 1000w or 600w. And the 600's seem expensive and almost the same price as a 1000w.

So I thought if I got another 400w light, I could run them together during bloom times to get 800w. Then, having 2 separate lights, I can still have the option to use one for veg & one for bloom at the same time. Currently, I have one of those flouro shop lights and a few CFLs if the 'real' light is in use.

Would (2)-400 HPS's give off MORE heat than (1)-800? (hypothetical).

I guess the 2 lights makes sense for me. The only question do I get another 400 or another 600? If I go 400/600 - then I have 1,000. Just not sure if 2 lights of the same wattage are better than one?
LOL - I'm befuddled about this. I would just like to have fat buds like I see in pictures vs. my thinner little guys. Since I'm doing all this work. You know?

EDIT: Yes, everything is mylar'd. Except ceiling.
moreover123 Reviewed by moreover123 on . Which is better? (2)-400w hps or (1)-600 or 1000? Hi. I currently have a 400w PL light setup. I was thinking to augment this with a cheapo 400w hps (used, rebuilt, etc. off ebay or inside sun). Certainly the 400w hps systems are affordable. I wonder though - is it better to have (2)-400's or (1)-600? I'm afraid to go with 1,000 as I'd have heat to deal with and wouldn't be able to get the light as close to the plants anyway so it might be counter-productive. My space is about 3.5 or 4x4 feet. Or - hopeing to not have more than 4 Rating: 5