Yesterday I setup a wet/dry for the first time. The thing is loaded with bubbles! At first there weren't many and I thought it was from the tank being filled. But when I got up this morning BAM! They procreated in the night. The only thing I can think of is the vent on the overflow is drawling air. It's a Perfecto tank and the over flow plumbing came with it. I was told the vent was to keep it from making gulping sounds. I was wondernig if it would be ok as that's a lot of O2 for the media. When I try to cover the vent holes the level in the overflow chamber drops about 2 inches and I get a sucking air noise. I don't know where else all that air can be getting in.
