ive had three grows all exclusively with DWC and im just gonna throw in my two cents. A lot of people opt for black buckets so that no light can penetrate but they are more likely heating their water unintentionally by doing so.

get a COMPLETELY opaque bucket. try to go with lighter colors with the most white as it will reflect heat BETTER. a bucket with a white top and black sides you will still be raising temps. also a tiny hole for gas exhaustion so that youre not throwing a lid on a boiling pot.

i stuck a 2$ film thermometer for a fish tank on the outside of my bubbbler to watch the water temps and i never got over room temp by more than 2 degrees F( 72.)
redaaron Reviewed by redaaron on . DWC Water Temp Problems 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. Rating: 5