I used to feed once a day(as much as they would consume), but still fought hair algea. About a month ago, I started thawing food, discarding juices, and only feeding 2-3 times a week. I thought the fish would starve, but they have been holding their own just fine, of course they devour the food at feeding time. The way I see it is, if they eat everyday, they poop alot more, causing more nutrients. My point is, I saw a huge difference in 2 wks time, and now my lawnmower blenny is starting to eat formula2! Once the hair algae receded, I have noticed huge growth of corraline.