NoPox or Lanthanum??

[reefmaster70]

Ok, I have NoPox currently and have used it in my 20g tank to successfully drop my po4 levels down to under .1 ppm. I have a 75g tank now setup that is newer, about 5 months old. I used Pukani rock in it, and I can keep all of my numbers in check with the exception of Phosphate. I have a bag of rowaphos in the bubble trap in the sump just before the return pump, plus I am dosing lightly (4ml) daily of NoPox...my phosphate reading is still currently at .45 ppm and Nitrate is 10ppm, which is fine with me. I do have some hair algae growing on some of the SPS coral tips, so it's currently out competing my sps growth wise. I am just wondering if maybe Lanthanum would be a better dosing option, as I don't want to drop my Nitrates too low, but want to work on getting the Phosphate lower. NoPox I think will work, but it also drops my Nitrates more than I want as well.

Any help would be much appreciated.

 

[rishma]

Agree that NoPOX will impact nitrate much more than phosphate. You’ll do better with another phosphate removal method

 

[BryanM]

Probably better off with rowaphos or GFO than nopox here.

 

[Randy Holmes-Farley Verified Community Expert]

I agree. Carbon dosing is not a great way to reduce phosphate.