Got one to reduce the filter pump output on a Fluval Spec for a Betta. Seems to work good. But woah, this sucker was big. I knew it would be for a 1/2″ tube, but I didn’t expect the valve to be that big. Nothing wrong with that, tho.Valve is nice and tight. This might be a problem to adjust in tight areas, but if it isn’t in a tight area, it’s good to make sure the valve stays at the position you place it.It’s kind of funny, this one is under the “Two Little Fishes” brand, but it looks exactly the same as a generic version of this valve, under regular hardware and not aquarium use. The graphic and logo on it are the same. So if you can find this valve under a different brand cheaper, go for it. This one probably isn’t even made by Two Little Fishes, just packaged by them.There’s someone else selling this same valve on Amazon for twice the price, plus shipping. So this one is the better deal, if you have Prime or are buying at least $35 worth of merchandise.