Phosphorus question

[Kfactor]

I have been testing my p04 with a Hanna test and realized I had zero po4 so I have been dosing it with about a 1ml a day or so . I have a reading usually around 1 to 4 ppb my question is should I make it higher ? Or is that fine ? My no3 is around 4 ppm

 

[Little_Red_Ryan_Hood]

What kind of corals are you keeping?

 

[Kfactor]

What kind of corals are you keeping?

I have been getting in to sps mostly with just a few acans

 

[Little_Red_Ryan_Hood]

I typically keep my SPS in phosphate levels between .03 and .07 ppm or 10 to 23 ppb. Others would likely recommend .01 to .03 ppm. I find the SPS corals look pale below .03.

 

[Little_Red_Ryan_Hood]

4 to 5 ppm no3 is good in my opinion.

 

[Little_Red_Ryan_Hood]

If you raise your phosphate levels, do it over a few weeks. You don't want to shock the corals.

 

[Randy Holmes-Farley Verified Community Expert]

IMO, 0.01 to 0.03 ppm phosphate is a good range for most tanks.