JBL Proclean Aqua EX

It is a small but intelligent and very efficient siphoning device that responds to waste from small aquariums. How to use: keep one end under water, suck briefly from the mark and leave the water to lose in the bucket. Suction will remove dirt from the bottom, and the square advanced separation will allow you to clean the corner as well. It is safe for aquarium inhabitants: a movable protected sieve prevents accidental suction of plants, shrimp and fish.
Tip: To avoid swallowing water, you can keep the entire hose under water until it is full, then pinch the end until it is above the bucket. Then the water will continue to flow on its own.