Boyu Submersible Water Pump - DS - 1000 sunsun they are a great option

they are a great option for both beginners and advanced enthusiasts who maintain optimal water conditions

This aquarium substrate is made to provide consistent nutrient release over time

it allows you to easily check and maintain optimal CO2 levels for the health of your aquatic plants

For optimum biofilter performance use 1 capful for each 80L (20 US gallons) once a month or with each water change and whenever introducing new fish or whenever medicating an aquarium

Safe for Shrimp & Sensitive Fish – Ideal for aquascaping and nano tanks

Boyu Submersible Water Pump - DS - 1000 sunsun they are a great optionThe GRAND BOYU DS Series utility submersible pumps are high efficiency by the permanent magnet brushless motor driving. Silent running and powerful suction. With ceramic shaft and bearding. High rub resistance materials with long life. Ideal for fresh and sea water use. Big water flow rate and high delivery head. Multi safety protection functions such as overcurrent, overheat etc. Safe and reliable. Industrial ABS plastic casing. Impact and corrosion