How Often Do You Replenish Rowahas?

[simonas]

I got some when I bought the tank, the same bag of rowahas has been in for about 3 weeks or so

how often do i need to change them?

thanks

 

[Ren&Stumpy]

change it when you test your water parameters and detect a rise in phosphates that simple.

 

[-Nemo-]

Usually about a month for me personally.