ok, i checked my levels for my 75 gal; they are as follows. ammonia 0, nitrite 0, nitrate 5, ph 8.2. salt level 1.026. i have a wet/dry filter a protein skimmer. Liverock is - 60#. i have 2 perculise clown fish, 1 hippo tang (yes i know it's an ich mag), 1 cleanter shrimp, 1 damsel one that i...