I usually feed them Danichi mini pellets about once every other day, sometimes every day, just depends on how busy I am. The tank is a 10 gallon. I just did a water change Wednesday and another one today and turned down my lighting period by 3 hours to reduce algae growth. As for auto feeders, I had one on a freshwater and it didn't work and ended up spewing the entire lot of flakes in the tank which, in a saltwater could be VERY bad. I rigged up an ATO with a bucket, an Maxi-Jet 400 timed at two minutes daily. With the distance both vertically and horizontally it tops off almost exactly what I need (slightly less) however three minutes was a bit too much.