Review on 🐠 Efficient Co2 Pipe Holder for Aquariums: ISTA CO2 Pipe Holder - 2pcs for 4/6mm Air Line - Tee Tube Valve Pump by Jackie Archuleta

Ideal for your standard small air hose (the type you would normally use with an Airstone air pump). I've used mine with an Aqualifter to suck up water from a reservoir and funnel it into my 12 gallon nano reef for fresh water topping up. You get 2 in a pack. The airline is a bit tricky to fit into the device (which is good because you don't want it to slide out). The bracket's fixed clip holds tight to the wall of my tank. I really can't say anything negative about this product.