I have a 90 Gallon with a 20 gallon sump. I have already lost 2 Skunk clowns, 1 coral beauty, 1 yellow goby, 1 purple dottyback, and multiple fire fish. My LFS says the fish caught ich along with cryptocaryon. I also have a Bristle tooth tang. He is the only fish left. I have moved him to a quarantine tank. All this happened within the past week. My water parameters are small trace of nitrite, phosphates .03, kh 10, cal 340 salinity 1.025. I have also been feeding ich shield.
Is there anything else I should do?
Is there anything else I should do?



