Reddit reviews ECEEN USB Pump Mini Submersible Water Pumping for Aquarium Fish Fountain Garden House Water Hydroponic Powered Via USB DC 3.5-9V 1-3W (Black)

IMPROVE WATER ENVIRONMENT – Put the water pump into water container makes still water become flowing water, provides streams of living water for underwater creatures.INCREASE DO & DEVELOP NITRIFYING BACTERIA – Using water pump can slightly increase dissolved oxygen in the water, cultivate nitrifying bacteria which is benefit for keeping clean water.CONVENIENT USB PLUG – Say goodbye with traditional plug, adopt USB plug. Never worry about blackout. It can gain power from power bank or solar power.SMALL & STABLE –Small size doesn’t affect beauty. Two suction cups on the side of water pump can be installed vertically or horizontally.NOTICE – 1. If powered USB 5V adapter, the height will be 0.5M; 2. The Pump must be working under the water always.