Remove the dirt and residual feed at the mini fish tank bottom.
As a mini-tank water changer deviceSuitable for brine shrimps, red worms and daphnias feeding after food unfreezing
The amount of water absorbed by dropper can be adjusted by controlling the strength of grasping the dropper end.
Add a liquid additive to the tank as a measuring tool.
Color: Green, Blue Material: Plastic
Application: Water pumping and changing for small fish tank, fish disease treatment for large fish tank.
1 x Aquarium Cleaner Pump