Julian's Thing from Two Little Fishies is a versatile, multi-purpose tool designed for a variety of aquarium applications. It is perfect for target-feeding corals, anemones, zoanthids, seahorses, and other timid or slow-moving fishes, and can also be used for the precise application of Aiptasia treatments, coral glue, and more. Lastly, Julian's Thing allows you to siphon out small debris or create water jets for spot cleaning substrate and rock. Patent-pending design. Replacement tips sold separately.