so i finnaly purchased a phosban reactor

I'd say at the very least,once a month.Unless you've got a heavy bio-load.
I cant remember what all you have in your tank.If you've got a lot of fish or several big fish,then you might want to change it every other week.
 
*cough* yeah ill take the every two weeks choice lol
if i were to say what all i have in my tank some ppl here would prob have a heart attack :shock::mrgreen:
 
I just hooked mine up also. Seems to be working. That's what I was going to do is change mine once a month.
 
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