what do i need to run phosphate??

There's various ways. The simplest is to put phosphate remover of some kind in a mesh bag and place it in high flow area of the sump. You can also use a phosphate reactor or run it in a canister. Anything to pass water through it.

Also if you have phosphate problems, it may be an indication of some other problem with your system, such as overfeeding, low water flow, or excess detritus buildup.
 
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