Do i ever need to change the bio-wheel??? I just got it used and its in a blackish color is that bad???
I have the one that is 300,,, for how manny gallond is it for?? does it go good for a 55 gallon???
Thanks..
I have the one that is 300,,, for how manny gallond is it for?? does it go good for a 55 gallon???
Thanks..