Soaking in RO/DI water first may have been a better way to remove the phosphate. Has there been success with that? I've read about the theory, but not seen any actual published results. Makes sense that it would work though. I already had the rock in salt water with live rock for seed when I realized the level of PO4.
Likely there will still be a large quantity of PO4 still bound up in the rocks, and in bacteria living in the rocks and on all the surfaces in the tank. Best case I would have a dedicated skimmer I could leave in the tank to remove the organisms from the water column as they die off, but I'm getting nervous about not having a skimmer on my display.
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