Refugium Criders

A variety of snails will be good. Cerith and nassarius are my favorites, but most will be helpful. Limpets, small chunks of LR, etc--some starfish are good as well to help clean up solids.
 
also other pods like amphipods and isopods
if you have a dual chamber one you could add some shrimp in it but not in the main one unless thier vegetarian shrimp
 
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