how big is the tank? I have a 10 gallon with 2 clowns and I feed once every 3 days. I also have a freshwater tank with about 14 fish and they get feed every other day. So you might want to only feed every other day or so to avoid problems with algae or water quality later. Also, the brine is more of a treat than anything else. Make sure to wash your food as well before placing it in the tank. Alot of frozen food contains moisture as the #1 ingredient and the water in the food can contribute to high phosphate. Personally, I cut off some frozen food, just enough to feed the tank, and place the cube in a strainer to dethaw before adding it to the tank. Good luck with your fish.