i was wondering what would work better on a 20 gallon tank with clove polyps zoos and some had corals. i have both ready to use just wondering what would benefit me better in the long run.thanks
Naturally both is best, however, if you must choose and if you have adequate protein skimming then the refuge would be my choice over the wet dry, and if you need the wet dry for the protein skimming then that should take priority.