I do it two different ways. One is I overfeed my tank with mysis, brine, plankton, etc. 2 cubes per day with 7 fish in a 125 gallon. A lot of the zoas catch the food as it floats thru the water column. The second way is once every other week I'll feed Fauna Marin food for Zoas/ Acans. You have to be careful with the Fauna Marin because overfeeding will cause a spike in nitrates. Less is more when using this product.