phosban or rowaphos

[reefman77]

how often do you change your phosban or rowaphos?

 

[mbbuna]

change it when you can test PO4 in the effluent

 

[reefman77]

how long does it usualy last?

 

[mbbuna]

it depends on how large your tank is, how much you use and how much PO4 you have in your tank

 

[Ti]

When PO4 rises, i's time to change

 

[buzzer]

Seen as though you seem to be after a guide I change mine every 2 months but as you can see people are wary of given times as each tank is different but that is what I do.