Lowering PO4

[BlueWorldJeff]

My PO4 is at .22 for my 180g with 30 g sump. I want to get it down to about .10 without stripping nutrients too fast.

I feed two frozen cubes (1 mysis, 1 spirulina) a day . I do 30g water change every other week.

Fish population is:
Sailfin Tang
Yellow eye kole Tang
Checkerboard wrasse
Leopard wrasse
Flame angel
Blue spot goby
Chromis x 2
Black and White ocellaris x 2

Should I do just a little bit of GFO in a reactor or feed less?

I have SPS that are growing but color is paling

 

[Randy Holmes-Farley Verified Community Expert]

Do you have a measure of nitrate and how do you export nutrients now?

 

[BlueWorldJeff]

Right now it's just water changes. I have used GFO in the past to get undetectable PO4 and NO3, but I want to keep some nutrients in the tank. NO3 is about 5-10

 

[XNavyDiver]

My PO4 is at .22 for my 180g with 30 g sump. I want to get it down to about .10 without stripping nutrients too fast.

I feed two frozen cubes (1 mysis, 1 spirulina) a day . I do 30g water change every other week.

Fish population is:
Sailfin Tang
Yellow eye kole Tang
Checkerboard wrasse
Leopard wrasse
Flame angel
Blue spot goby
Chromis x 2
Black and White ocellaris x 2

Should I do just a little bit of GFO in a reactor or feed less?

I have SPS that are growing but color is paling

I do gfo in a reactor. I only use 3/4 of a cup in my 100 with a 40 gal sump. If you start slow and test every day, you can get it dialed in fairly easily. I don't see a problem with it.

 

[Randy Holmes-Farley Verified Community Expert]

If you have a reactor, you might try a little GFO. If you do not, maybe some aluminum oxide media in a media bag would be cheaper.

 

[BlueWorldJeff]

1/2 cup of GFO has been tumbling in a TLF150 reactor for 10 days. PO4 is now .06. Right where I want it. Should I turn off the reactor or just let it exhaust and monitor until it doesn't change?

 

[Randy Holmes-Farley Verified Community Expert]

1/2 cup of GFO has been tumbling in a TLF150 reactor for 10 days. PO4 is now .06. Right where I want it. Should I turn off the reactor or just let it exhaust and monitor until it doesn't change?

I might just leave it for now. [emoji3]