Can be used to clean fish manure and feed. An aquarium dropper water purifier can also be seen as a small aquarium and aquarium water changer. On the transparent body of the coral feeder, you can clearly see the amount of feed. This will ensure you know exactly how much coral or other fish you are feeding and prevent overfeeding. ? Size ? The water cylinder dropper length is 28cm, the extension tube length is 25cm, and the total length is 53cm. [Material] Made of high-quality acrylic and rubber materials, safe for fish and coral, durable, long service life. ? Package Contents ? Clean dropper *1. Expansion tube * 1. Connecting pipe * 1.