Quote Originally Posted by dhmessiah
Hey guys, since ive gotten so much great feedback from the other two threads i have posted, I thought i would ask you guys another question.

I'm runnin a DWC setup and have been having problems with root rot due to my water temps bein about 82 deg farenheit. My question to you gurus is what is a good way to keep the temps down? The space i have the ladies in is in the air conditioned house, but all the lights seem to be heatin up the water temp. The room temp is about 72-75 deg farenheit. I have good ventilation in the room thx to a 6 inch fan exhausting into the recirc vent of the house. So how the hell should i cool my water down?
Thx in advance dudes!:thumbsup::jointsmile::rastasmoke::stoned:

I'll start with u, and try to help somebody every day, we need more growers! :thumbsup:

how the heck is you're room temp that low and you're water temp that high? What do you have in the water creating so much heat? 68-70 water temp is ideal, I've grown tree's with DWC before, and everything ive read is 71+ will create root rot, oxygen levels are a lot lower with the higher temps.

Buy a water cooler off craigslist, the $20-50 used ones, the kind you see in doctors offices. Rip the coil out and modify it to work with you're DWC. Theres how-to's if you search the net....just a cheap alternative to buying a $300-500 chiller, or using water bottles which will do the trick until you forget once and loose it all.

Next, if you're using non air cooled HID's those temps may be fine, leaf temp is going to be higher than room temp, 78-80 is perfect leaf temp as I call it. The stomata's will start to close and stay somewhat closed under 78 deg's, and that will slow growth down. Keep humidity at least at 50% veg and 40-50 for flower. Drain the water from the DWC if you need to adjust ph, don't adjust it with the plants in there...and let it drift a little to. That should get you started. :rastasmoke: