So I have a 20g Lps reef that im setting up a sump on, the sump will have a refugium section and i want to know what i should do with it. The tank is not run with dosing or ultra low nutrients or anything crazy, just 25% weekly WC. Im planning to put LR rubble in it and looking for cool things like critters and or algae and plants to put in it that will be helpful or just other general stuff to do with it to help the tank, light suggestions ect.


