In my spiny eel tank, I tested the water and it is not what Tanganyikan water is supposed to be. The pH is too low, basically. I only use cichlid buffer, and don't add any other salt or pH changing additives. The eel is fine right now, but I don't want it to drop dead mysteriously, like my male killifish. Is there a detailed plan i should follow to make the water perfect? Maybe I should bring my tap water in and see what I should really add to it.