When I was fighting dinos two years ago in our propagation systems, the Ca and Alk were wonky. Couldn't add enough Ca to budge it. We were dosing up to 10 gal a day of kalkwasser into a 400 gal system and couldn't budge Ca from 320 or so. We weren't sure if something was consuming it at an enormous rate or something was affecting the test results. Test kits were typically API with Salifert tests run and a professional lab analysis to confirm. There was no precipitation.
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With fronds like these, who needs anemones?
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