????????? ?? ????: ?? ?? ???? ?????? ??? ?? ??????? ?? ???? ?? ???????? ?? ??????? ???? ??? ??? ???? ????The pH really should not be much too high or far too very low. A pH of close to seven.five is nice. There need to be a continuing source of oxygen while in the fish tank. Ammonia and germs levels needs to be managed. It is better to observe Biof