A check valve is used to prevent water from siphoning out of your aquarium. If water siphons out, it will usually damage the air pump and lead to water on your floor. In extreme cases, this can lead to fire if electronics are sitting in water.
A Must-Have for Every Air Pump
A simple check valve is all that stands between you and a floor full of water. If your air pump is below the top of the tank, you absolutely must add a check valve between the air pump and the air-driven device (e.g., sponge filter or aquarium decor). If the air pump ever loses power or gets turned off, the check valve prevents water from traveling down the airline tubing due to gravity.
Don't Forget About the Brine Shrimp
A common "air-driven device" that people often forget about is their brine shrimp hatchery. We have personally lost power in the middle of the night and experienced the pain of cleaning up fishy, rotten brine shrimp all over our counters. So don't forget to add that check valve!
An absolute must for any airline in your aquarium. Works well and looks clean.
P
Pattie M. (Long Beach, CA, US)
Check valve
Well made and easy to assemble.
I feel better knowing that my tank is being equipped with Co-op merchandise.
B
Brenden F. (Naples, FL, US)
Check valve
Works as advertised, good quality , no complaints
W
Wanda T. (Detroit, MI, US)
Check valve
Product works well with your back up pump in case of power failure ( l luv this product); now l don’t have to worry about my fish dying during a power outage 🥰
T
Troy G. (Oklahoma City, OK, US)
Awesome
M
M. S. (Reston, VA, US)
Dud
The check value I received is completed sealed and will not work. Disappointed in the quality control.
A
Andrew E. (Los Angeles, CA, US)
does the job
I have used MANY of these check valves. If I need more, I will purchase additional units from Aquarium Coop. I am satisfied.
K
Kevin D. (Montreal, QC, CA)
Stops backflow
A small but critical safety device that works really well!
