Long time reefer but have a Newer tank. My others are still operating successfully. Just wanted a larger tank. Everything was running fine and all corals that were moved from old tank growing fine including acros. Had an outbreak of ich and used ruby ick pro. Noticed not much change over the two weeks until after the final dose and I lost a monti and birds nest over night. All parameters right on point. Sent out icp and only showing high silicon at 800 and some aluminum. Did 2 twenty percent water changes. No improvement. Almost all corals not improving. One large torch still ok but all others closed up or dead. Don’t know what else to do. Nothing else changed in the tank. System controlled by an APEX and dosing to maintain calcium and alk
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