Review on Pssopp Aquarium Regulating Adjustable Regulator by Jennifer Ford

I have purchased over 5 of these pumps based on positive reviews. Although they worked very well initially, over the course of the second month it became too difficult to adjust ANY valve without pliers (should only be a fingertip adjustment for the life of the product). More than half no longer close completely and are therefore unusable. By calling it an aquarium product, the seller is simply using the term to change the market. These are typical 1/4" NTP pin valves with air line fittings. You can find them in many different styles and much better designs.