Cichlid Fish Forum banner
1 - 1 of 1 Posts

·
Registered
Joined
·
129 Posts
Higher pH is considered healthier for Malawian fish because it's what is native to their habitat in Lake Malawi. The pH itself is not so critical, but stability is, and that's because a lot of the chemicals that we try to keep in balance in an aquarium are in complicated ionic states that can shift at different pH values. For example, ammonia (the gas produced as waste by fish) will readily hang out in its non-toxic ionic form ammonium when the pH is neutral or acidic. But when the pH rises, the ammonium converts back into ammonia gas and that is toxic to fish. If it happens slowly, the biofilter will consume the ammonia and no harm will come. If it happens rapidly, the fish will croak, or at least suffer damage to their gills, depending on how high the ammonia concentration goes. So, stable is the main thing. If you're going to be diligent about buffering pH to keep it stable and high, then super. If you're not, then let it stay where it's drifted and be aware that you don't wanna make any quick raises to pH without planning for the ammonia spike that goes with it.
 
1 - 1 of 1 Posts
Top