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Neglecting nitrate tests led to a coral crisis in my tank, learn from my error
I was so confident my reef tank was stable that I skipped nitrate tests for a few weeks... big mistake. First, my acropora began to pale, then my mushrooms closed up, and I panicked thinking it was a disease. After ruling out temperature swings and checking my lights, I finally tested the water and found nitrates at over 50 ppm, way too high for sensitive corals. I figured it out by process of elimination and recalling a forum post about nutrient creep from overfeeding. My solution was immediate large water changes and adding more macroalgae to the sump to absorb excess nutrients. It took a month, but things are recovering slowly. The key lesson? Nitrates can accumulate silently from decomposition and leftover food, so test weekly even if everything looks fine. Don't be like me and wait for visible stress signs... by then, it might be too late for some specimens.
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oscar_barnes231mo ago
Your point about testing weekly even if everything looks fine is dead on. Maintaining a simple logbook can reveal creeping issues long before corals show stress.
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margaret_mitchell1mo ago
Admit I'm terrible at following my own advice about weekly tests. My logbook usually has more doodles in the margins than actual data entries. Seeing the parameter drift over a few empty weeks finally shamed me into consistency.
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