Coral declining need HELP
- Thread starter longjohn
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- Feb 14, 2023
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- Tewksbury, MA
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- Massachusetts
Sorry don't have time to read every post in this thread, but I had the same issue happen with off the chart phosphates and zero nitrates. I truly believe that either the Marco rock or Real Reef rock or both, held/stored up PO4 and then released it as the tank was maturing. I went crazy chasing the numbers down causing myself other issues. My first tank that I built using Live Rock (back when you could get it right from the ocean super-easily) never had this problem. I really dislike not starting with true "Live-Rock". I would bet a weeks pay that the rock is causing the PO4 boom.
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