problems with my DIY CO2 system
I've had this working perfectly for 6 months now. The standard 2 gallon plastic coke bottle, had tube connector drilled in the lid and sealed with aquarium sealant. The tube went to a glass jelly jar with tin lid, had water in it for a bubble counter. That was also sealed with aquarium sealant. That output tube went to the tank, with an air stone and sat under the intake to my canister filter. When I built this, I read that CO2 breaks down check valves, so they don't work very well. So I didn't see the need to use one. Ugh...now I kind of wish I tried using one anyway.
Thankfully, I was home today when I noticed water running out from under the aquarium stand. But I'll back up to last night when I changed out the yeast recipe (I change it every 2 weeks). When I took the bottle out of the aquarium stand, the tube connector completely came off. The aquarium sealant that was holding it on just fell off. I was baffled, but went ahead and sealed it back to the lid of the bottle. I waited about 4 hours and it felt dry, so I went ahead and made my recipe, hooked it all up and went about my business.
It usually takes about 2-3 hours before I see bubbles. So I was surprised not to see any bubbles this morning when I woke up. I looked at the tube and didn't see any water in it. I decided I'd mess with it later today. Bad mistake.
I walk by and notice water running down the floor, alongside the couch. I found it was coming from the aquarium stand. I opened the stand and saw that the sealant from the glass jar had come undone and the glass jar was completely full of backed-up water. It was a steady stream coming from the tube. Oh and the water that was in the glass jar smelled horrible, like rotten eggs. The plastic coke bottle smelled of the normal yeast smell.
Now I'm baffled as to what caused this to happen. Should I be using a different kind of sealant? Is there a check valve that I can use with CO2?