Yeah, been doing my homework...wana get it right the first time. Thanks for your replies guys, the reserve tank is 40 gallons. Have a few more questions...

I hear 70 degrees is the ideal temp, if it gets hot, I was told to toss some frozen bottels of water in to lower temps?? I have the lights and room well vented so I don't think I should have a problem with water temps. Worst case, I'll put a small AC unit in, but I hope not. I have a dehumidifier just in case.

Thinking about covering the top of the res with mylar as I am making top reflective covers for the 60 3" baskets. I suppose I could cover the trays in mylar as well...but would prob be a bitch to clean and a pain to do.

Any advise on what converter MH bulbs to get for my 1000 watt HPS ballasts? Do I really need the MH bulbs? I was told I can get away with using the HPS from the time the clone is rooted till flowering. If I'll get better results with the MH bulbs for 2 weeks, I guess it's worth the extra investment.


I'm going to get an RO system like you guys suggested. What is the "DI" in the RO system? Can you suggest an economical brand/model for me? Pardon my ignorance with lingo.

OK, so not going to top them and I will flower when clones reach a good 8-10 inches. I understand that will take very little time with these types of systems. Do these systems really take time off the flowering period?

The lights have hortilux bulbs, special for flowering state. I think I'm going to get some MH convertion bulbs for when the clones are veggin.....good idea or not worth it??

How long are your average flowering times with this sytem (and 2 X1000 watters)? Say 50/50 sativa-indica mix or a white widow or something close to that??

Oh..and about how large is the expected harvest size for a 60 site sytem with 2 1000w?? (know it depends on strains, nutes, etc....just ball park).

Again, thanks so much for your help guys. This is soooo much fun!!