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- Nov 13, 2019
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So I have a 15g which I know will lead to some instability but this one is stumping me. Randy kind of started me on the topic so I'd like to discuss further. My Alk stays around 6. Yesterday i measured and it was 4.9. Did a 20-25% water change and 24 hours later it is 5.7. Using reef Crystals, fresh mix was 11.2. Now where Randy lost me is about a correlation with nitrates and Alk. And another thing about precipitation. Can I dose All for Reef and be fine, or is there more to it? Ultimately I'd like a full break down on cause and effects and just to learn what I can/ should do.