what do you mean by properly maintained? Cleaning them often? I thought the purpose was for them to grow bacteria.
This is what i have model 3 Aquarium Filtration: All-Glass Aquarium MegaFlow Sump Filter Wet/Dry Filter
I use the middle compartment for the Aqua C remora skimmer and my heater. I am also currently using it to put frozen bottles of water since my temp has been going up to 83. No fish in there yet.
I really want to get a mandarin, but i was told not to do so until i have a refugium and can grow copepods.
Is this a possibility with this wet and dry filter?