Hi, Water test results areas follows ; ammon 0, trites 0, trates 80 yes I need a water change. ph 8.0 , phos 0, kh 107.4 not good . 90 gallon tank with a 25 gallon sump w/ skimmer, multiple corals , 4 cleaner shrimp, 6 turbo, asst. small snails, 5 peppermint shrimp,2sallylightfoots, 1 coral...