This item adopts the principle of barometric siphon design, helping fisherman do pumping work in the fish tank Easy to use aquarium cleaning pump. Keep your fish healthy Water absorption can also help clean sand and dirt attached on water grass and sand bed. Until the water comes out from the outlet Replace the old method than pipe mouth suck native method, make fish feeding easier, more safety and health Keeps the aquarium clean, gives your fishes a pleasant living environment Package included: 1 * vacuum fish tank. How to use water 1. Place the water changer in the aquarium. 2. Put the water outlet at the other end of the water pipe into the bucket. 3. Open the water quality valve. 4. Gently squeeze the air cavity by hand until it automatically discharges the water. 5. Lower the water inlet to absorb fish manure and feed residue in the sand. Precautions 1. The water level of the water outlet must be higher than the water level of the water inlet. 2. The sand that is too small will
