I bought an Ai wave pump for $175 bucks and the magnet isn't strong enough to hold the wave pump in place. The wave pump falls down all the way to the bottom of the tank as soon as I try to put the magnet on the glass. It's a great wave pump and works great my sps are happy but Jesus christ you spend all this money on a pump and they give you a garbage magnet that doesn't work . Do better Ai