I feed heavy (3x auto dry, 2x manual frozen), and run a skimmer, fuge etc + WC weekly.
I see my nitrate creep from 10 - 20 throughout the week until a WC.
Phos stays steady at .20.
If I add a conservative amount of GFO, I can get Phos down to 0.09 after a few days. With it removed, there is no creep, it just bounces right back to 0.2.
This is a newer tank, and I am not super concerned about the numbers (I’d be perfectly fine if the nitrate stayed at 10-20).
I am more curious about the mechanics of the phosphates - is it just leaching / creating an equilibrium with the dry rocks I have in the tank?
I see my nitrate creep from 10 - 20 throughout the week until a WC.
Phos stays steady at .20.
If I add a conservative amount of GFO, I can get Phos down to 0.09 after a few days. With it removed, there is no creep, it just bounces right back to 0.2.
This is a newer tank, and I am not super concerned about the numbers (I’d be perfectly fine if the nitrate stayed at 10-20).
I am more curious about the mechanics of the phosphates - is it just leaching / creating an equilibrium with the dry rocks I have in the tank?