Ok so just got back from the water plants farm and got a test kit for ph as well as ammonia levels. The ammonia levels were ok but the ph went straight to blue which according to the card included means at the 9.0 or higher level. I know that isn't good and can kill the fish so what is the immediate recovery method? The water temps are actually staying relatively ok, i am beginning to think it is due to a real lack of O2.
I picked up some water lillies, water lettuce, and something called parrot feathers. They told me one of the best plants to use to produce oxygen is a water hyathicid (?). But they are illegal for some reason here in AR. Any idea about that?