There is a high probablity that you feed your tank mates frozen fish food. You might even have a custom blend that you make just for your fish. Along those lines you, like most fish keepers, feed your fish to much. Not to worry, having fat happy fish swimming around in the bliss of random currents is part of being a good reefkeeper. The SERA automatic feeder will feed your fish dry food when your not there, formula 1 or 2 pellets or other dry food varietes are a perfect math. The feeder has a mini air compressor so that they food does not react to humidity and stays fresh. We understand why our fish eat better then us, they have mini air compressors keeping their food fresh. You can pick this up for around $25 overseas.