The Dupla Gel-o-Drops holder optimises controlled feeding in the aquarium. It prevents the Gel-o-Drops from floating around uncontrollably in the aquarium or disappearing in the filter sump. The application is very easy. Take the respective Gel-o-Drop out of the packaging, impale it on the Gel-o-Drops holder and attach it to any spot on the aquarium glass using the suction cup. Thanks to the holder, the fish can be directly observed while feeding. On the one hand, this is great fun and on the other hand, the health of the animals can be kept an eye on.Dupla Gel-o-Drops Holder+ small, handy and easy to use+ flexible thanks to suction cup attachment+ fish can be watched while feeding+ brings great fun when feeding+ very easy to use