Review on 🐠 Aquarium Enhancement: Penn-Plax Bubble-Wall Air Diffuser for Optimal Water Oxygenation by Maria Duncan

I originally bought this just to add movement to the surface but my goldfish and dojo loaches love it in bubbles to swim! Even though I bought the longest model, I tried connecting it to the Whisper 10 I already had and it provided enough air to get to the end of the hose. It took several hours to get full blisters. My only complaint is that they are blue. The black version would have looked a lot better, at least for those of us with black backgrounds. I guess that's an excuse to plant more plants to hide it!