Review on 🐠 Hikpeed Submersible Aquarium Filter - Powerful Internal Filter for 55-75 Gallon Fish Tanks with 3 Stages Filter Media by Stacy Harris

This is an excellent filter in terms of noise level, easy cleaning etc. The air supply/air bladder is somewhat adjustable but not sufficient. The output is too strong for small fish - it spreads it throughout the aquarium. Just adjusting the cap helps a lot. I ended up pinching the pipe and using a separate bubbler that doesn't hurt the fish. Great if you have strong swimmers, but not great if you have smaller fish that don't typically live in rough water.