What is your fresh water source?
If you are using an RO/DI unit, when was the last time the filters & DI were changed? And what is the TDS reading after the RO and then after the DI stages?
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Single System Setup: 210G SPS reef, 225G FOWLR, 72G water change, 50G frag, 120G sump. I promise a journal at some point! (anyone need some coral frags? I likely always have stuff that is frag-ready)
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