:hi:
are these really as good as they say?
interested to know if anybody uses them on any of their tanks?
how hard are they to maintain, how often should the media be changed?
i like the idea of extra filtration without extra power consumption as they generally run off the return from an external canister filter.
Thanx 4 looking
are these really as good as they say?
interested to know if anybody uses them on any of their tanks?
how hard are they to maintain, how often should the media be changed?
i like the idea of extra filtration without extra power consumption as they generally run off the return from an external canister filter.
Thanx 4 looking