Review on YOOTOP Aquarium Mountain Design Diffuser by Savanna Wilson

This product is decent. At first, very few bubbles come out of the stone; however after an hour or so to do so. Air does not come out of the whole stone (as in the photo), it is directed more upwards. The flat bottom is the most liquid place, it forms big bubbles that come out from under the rock (this is not ideal). There is also a small leak in the pipe connection. Air can escape and not penetrate through the stone. It would be better if the bottom was sealed to allow air to flow through the stone. I hope that as the stone penetrates and air flows through, over time it will come out of the entire stone. Despite these disadvantages, it is a beautiful airy stone that produces bubbles. To update. I covered the bottom of the stone and the leak at the pipe fitting with epoxy. The stone is now working perfectly as it should be upon arrival.