Pawfly Cross Aquarium Gang Valve: Efficient Air Flow Control Lever Valve with Check Valves, Suction Cups & Connectors for Fish Tank Review

As you'd expect, this is a cheap air separation solution. But expect it to hang, there's no mount, and these mugs won't stick unless you apply temporary glue or something else. I had a hard time getting the ratios right as you would expect, but it's probably just the physics of how input and output signals change with pressure resistance.

I bought this expecting to use a 100g air pump for its 4 ports. However, 4 sponge filters cannot be operated at the same time. If you use an air stone or air stick, only 2 of them will work at the same time. The only constructive thing I see for this product is if you want to toggle certain filters or airstones on and off between different tanks, but don't want to run them all at the same time.

Good quality metal valves, they appear solid and well made unlike cheap plastic valves offered by other manufacturers. They are light and easy to open and close, offer good airflow and I like them a lot more. than any plastic valve as they look, function and feel far better than any plastic air control valve. They also offer excellent value for money as they cost the same as a cheap 4 way plastic valve but are of a much higher quality.

Great little collector. It's a little tricky to get a precise tiny drop of bubbles out of my decorative volcano. However, it masters its task properly, the supplied suction cups only hold it to the side of the aquarium. The standard air hose fits perfectly. One problem: Three one-way valves didn't work, none of them. The air blew easily in every direction so they didn't prevent the back flow of water. There isn't much of a problem here since collapsible check valves are cheap.

Valves surprisingly well built; They had some weight and worked independently. The suction cup clamps attached to the valves are not holding them securely causing the valves to fall off. The clips are also not held securely in the suction cups; They are two separate pieces held together by a small crest and the elasticity of the rubber. Gluing works. Didn't test the one-way valve (thanks for the drip loops). Recommend.

I used this for dosing lines in planted aquariums from the dosing pump to the water line. I wanted to run each fertilizer line independently from the metering pump to the filter line that goes back to the aquarium. So I can be sure that the fertilizer conveyed by the dosing pump gets into the water jet immediately and in good time. I used to combine all the different fertilizer lines into one main line. Thus, the fertilizers were being mixed within the line and not being dosed on the schedule…