KNOP KORALvit F is a suspended nutritional solution for all filter feeders and suspension feeders in a reef aquarium. KORALvit F has a high contents of protein and vitamins, especially the important vitamin B-complex. Soft corals, stony corals, giant clams and numerous other reef tank inhabitants take up floating and dissolved substances from the water. Feeding KORALvit F on a regular base supplies your tank inhabitants with important nutrition and makes it grow marvellous.