TreeOfLiberty
Well-Known Member
I've used water proof silicone caulking, it floated to the top, I've used PVC cement, it floated to the top and melted some of the plastic on the air stone too. I'm trying to make my first DWC out of a 10 gallon Sterilite tote. Whats the best stuff for holding an air stone down, my air stones look just like this>
http://www.walmart.com/ip/Aqua-Culture-Bubble-Aquarium-Stone-1-ct/10532630

http://www.walmart.com/ip/Aqua-Culture-Bubble-Aquarium-Stone-1-ct/10532630
