halide

I'm having trouble finding a simple explanation of the difference between the Philips CDM T9 and T12. Also, the difference between Agro and non-Agro. Can someone please explain it? I know someone already asked about this on here a few years ago but, I didn't really see any clear answer. Maybe...

Hey guys, I ordered a 600w hps and it's in the mail, I got it for $90 total. Dimmable and digital. I just found this 400w CMH from HTG SUPPLY. Which one of these two lights would you recommend for my 5'x2' flower area, and which would be best on heat and noise? Im new and it is my first grow...

Hi guys, was wondering if anyone can help me. I have a 250w ballast and was wondering if I could use a 600w bulb in it as it is the only bulb I have to hand at present. Would there be any downside as I know the bulb will be running under powered but that is better than over powering ?

Hello all, My seedlings are about 2 weeks old now from seed. They are just poking their 4th pair of leaves up now, stems seem to be thickening and so far very healthy. I've got GSC, NYCD, and Misty growing (1 plant of each, all fem except misty which unfortunately I got 2 bad seeds from out of...