TERA PUMP Electric Fish Tank Pump/Cleaner Make sure to use a discharge hose within <span class="a-text-italic">15mm</span> thick &amp; <span class="a-text-bold"><span class="a-text-italic">10 Meters</span></span> long. Make sure to place the dischyarge hose above the water leven in the aquarium. When draining, you can raise the discharge hose <span class="a-text-bold"><span class="a-text-italic">2 meters</span></span> high maximum from the level of water in the tank When dupplying, you can raise the discharge hose up to <span class="a-text-bold"><span class="a-text-italic">1.5 meters</span> </span>high Maximum from the level of the water supply in the tank. If the power supply falls into the water, 1st make sure to switch off and remove the end of the power supply and do not reuse! Make sure to empty the remaining water in the hose, otherwise the pump will not discharge water next time. Whe cleaning up the pump, do not use thinner, benzene, organic solvent, or glass cleaners. When disposing of the pump, make sure to have it completely destroyed so that ogher will not use it.