Posted: Sun Sep 02, 2012 3:42 pm Re: air rock
A RES does not need it. They breathe air above the tank.
My son has only had his RES about 6 weeks, but only had an air stone for a little over a week.
The only reason I put it in was because of the protein scum forming on top. The air stone did take care of it, but it is absolutely not needed.
Tobi a RES born in 2012
1 dog, 1 teenager, 3 aquariums filled with fish, snails, shrimp and a bit of algae