you can lower phosphates by grown chaeto in a refugium or running a phosphate absorbing media in a sock or preferably a reactor. but this treating the symptom and not the problem, you need to find the source to be successful or you will always be trying to get rid of them.
are you using RODI?
what and how much do you feed?
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120S RR tank with 60G basement sump / fuge
Return Pump: Little Giant 4-MDQX SC
Water Movement: Seio 1500, (2) Hydor Koralia 4's
Lighting: 400W SE MH with 14K Aqua Connect
Skimmer: Euro-Reef RS250 with gate valve
Other: RODI, RDSB, PO4 / AC reactor
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