Review on AquaTop AP 100 Aquarium Air Pump by Laura Mariana

I am VERY disappointed in this product. I liked it at first, it did the job, it wasn't very noisy but I definitely couldn't sleep with it at night. I bought two in my purchase but one of them ran out of power. The air comes out, but cannot create bubbles through the air stone. I've bought new stones and tried other filters and I know it's not the stones or the pipe. Really disappointed. I hope the company will trade it for a usable one. He doesn't deserve any stars