Review on 🐠 Hydroponics Aquarium Fish Tank Pump Aerator Diffuser - 4 Pieces Round Air Stone Disc Bubble Diffuser Kit with 12 Suction Cups for Enhanced Oxygenation by Julie Cuevas

The suction cups will not work for more than 10 minutes at a time and when the suction cups fail the rock will float on top of what it is. This means that if the entire item rises and releases all of its bubbles to the surface, the entire item is effectively useless. Everything you need them for will die unless you tie rocks around them to keep them submerged. Garbage. Also the whole gem will randomly stop working. That's insanely expensive for something that's meant to be thrown in the trash as soon as you open the box. Revain sucks for posting shit like that, but they don't care.