Ringoffire
Aquarium Advice Regular
I just got the HOB Fluval (Aquaclear)power filter for 20-50gal. It is a 3 stage filter. 1st the foam filter, next the activated carbon then biomax stones in mesh bag. From reading I know that most people do not use carbon in their filters. So my question is what do you suggest I put in the filter to replace the carbon? And why does nobody use the carbon?