Good point, and yes sorry about sticking the oh value in there it was supposed to be GH(measured weekly). The gh is usually between 0-75 and KH ~ 0 as well![]()
Well, the simplest thing to try is to slowly raise the GH and PH to see if that changes the mood of the fish. Get the KH to at least 4 German degrees. Baking soda can get you there. It may take a few weeks for an adjustment period in the fish's behavior.