55 gallon fish tank with fluval 305 and aquaclear filters. I had high ammonia levels in my tank and high Ph. Picked up this called neutral regulator where it adjusts the Ph level to 87.0 and removes ammonia. I put it in the tank checked my Ph level and ammonia levels and everything dropped to safe levels. Now the only problem is all all my fish are swimming on the surface gasping for air. I took some of the water out so there is a better air circulation. But no help. What should I do.