The most Precise Aquarium Air Control Ever. It's accurate visual controls make
it easy to see how much air is flowing through your lines. The convenient Flip
Cover protects against mineral build-up and helps maintain a clean appearance.
It will easily fit securely on all tank frames because of it's adjustable
Universal Hanger. All plastic construction makes this valve suitable
for both freshwater and saltwater aquariums.
Hang the device over your tank frame and connect your air line hosing to the
Input nozzle. Next connect up to two airstones to the nozzles, each containing
their own Flow Meter Control.