A Perfect Balance Of Premium-Select Ingredients Developed To Promote Proper Growth And Desirable Form In Most Herbivorous Species. The Uniquely Shaped Disc Sinks Rapidly And Retains Its Shape Allowing Less Aggressive Species Ready Access To Its Nutrition Over Longer Period Of Time. Feed No More Than The Amount Your Fish Will Completely Consume Within 2 Hours. Many Bottom Feeders Are Nocturnal, For Best Results Feed Late In The Day Or At Night. Care Should Be Taken To Avoid Over-Feeding And Always Remove Uneaten Food After Feeding Period.