Same as for just about anything! Amm, Nitrite, nitrate, all at zero, Alk, 7-11 Dhk, Ca 375-450 Ph- stable as possible. I dunno, nuthin special. You lookin for specific information. Zoos, shrooms and just about everthing else appreciate pristine water conditions, or as close to it as possible, cept for clams, they like some nutrients.