Ideal for our 5 gallon tank. I wash my hands before use to avoid getting lotion etc. in the aquarium and after use I wash off any remaining fish water from my hands. To install, I use a black clamp to connect the end of the hose to the used bucket of water at a level below the aquarium on our stand (bucket on a chair). Be sure to unplug the heater before removing water. I leave my betta in the tank and suckle around it slowly to avoid the stress of moving it back and forth. To use, I dip the end of the vacuum into the top of the aquarium water at a slight angle to draw some water into the hose, then quickly do it again immediately. When the suction starts, I can tilt the cleaner down and gently suck into the aquarium gravel. It works well.
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