Proper Ph For A Channel Catfish In An Aquaruim. To make things even easier, these catfish are very mellow and inactive. A ph of 7 is neutral and most catfish do well at this level.

Vacuuming and partial water changes will help correct that, but you may need to add some alkaline ph correcting chemicals. Be sure to frequently test the water for nitrate levels. Asian stone catfish are one of the smallest aquarium catfish species you can get.