I've heard that T5s are great for seedlings, clones, and even vegging. I think your 400 HPS will still be ideal for flowering. I also have temp problems during the summer. Sometimes my cabinet gets up to 32 degress C (90 degrees F).
Chong Version 2.0 Reviewed by Chong Version 2.0 on . Germination thru flowering? I have been getting lots of mixed info on T5 lighting. I am particularly looking at the new wave T5 4' 8 bulb 40k lumens. I usually hear all the horror stories about someone who knows someone who said yields are terrible or it can't be done etc. Has anyone completed a grow with T5? I understand, I am hesitant also to move away from my 400whps but the temps are driving me nuts and sometimes you just have to change some things. Rating: 5