I think for established reefs like yours with big SPS colonies, you can get away with a lot more. The SPS is already used to your system. Even if a few spots of your SPS colony reacts, you can recover once you fix the issue...it's more forgiving.
But for my 6 month old reef, the tiny little 1/2" SPS frags hasn't even encrusted yet, they don't tolerate as much. Once those little nubs react, it's done. I don't think they are recovering. Plus I probably have other problems, and not just phosphate. I also have sand, which probably keeps a lot more gunk. It takes a lot longer for me to fix a phosphate problem.
But for my 6 month old reef, the tiny little 1/2" SPS frags hasn't even encrusted yet, they don't tolerate as much. Once those little nubs react, it's done. I don't think they are recovering. Plus I probably have other problems, and not just phosphate. I also have sand, which probably keeps a lot more gunk. It takes a lot longer for me to fix a phosphate problem.
I think all of these videos from BRS and the like, have scared people from using established rock because they think they’re going to prevent the bad things from entering the system adds they can sell overpriced, ugly Marco rock. Meanwhile, they’ve created this sterile system that can’t fully support the animals they want to keep. Kinda seems counterintuitive to me?
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