PO4 can't get it right

[jackinthebox8332]

Hello everyone, I've had my 100 gallon FOWLR tank for a few years. In peer posts I mentioned I am now going for my soft corals and want to add an anemone. I research everything and as you all know, water parameters need to be on the money for these animals. All of my water parameters are good except for phosphate. I can't get it down, always at 0.25, sometimes 0.22. I've read all the suggestions on line and implemented them.
Could you experienced reefers tell me what you are doing to get PO4 in acceptable range?
Thanks again, jackinthebox.

 

[griss]

Do you run GFO? If so, how are you using it? Media bag? Media reactor?

 

[Uncle99]

Hello everyone, I've had my 100 gallon FOWLR tank for a few years. In peer posts I mentioned I am now going for my soft corals and want to add an anemone. I research everything and as you all know, water parameters need to be on the money for these animals. All of my water parameters are good except for phosphate. I can't get it down, always at 0.25, sometimes 0.22. I've read all the suggestions on line and implemented them.
Could you experienced reefers tell me what you are doing to get PO4 in acceptable range?
Thanks again, jackinthebox.

Which test kit. Most can’t read much below 0.25ppm. The colour change is so faint, hard to tell.
If the kit is Hanna phosphate or phosphorus I find there readings good ball park.

I’ve run .25ppm for 5 years, so I think if you can keep it say .1-.25 consistently, I’d leave that. Phosphate is used by many. Over time, it builds up so watch for increases. If that happens you can run your choice GFO to mop that up a bit.

Its more about stability than any one number. (Within traditional bands)