Steve1986
Active member
So I bought a wp40 in the recent group buy and I'm having problems. My tank is 1/4" acrylic, every time I put the magnet on the outside of the acrylic it stops the pump. If the outside magnet is not there it works just fine. I have also taken it out of the fish tank and tried it in my fresh water reservoir and the same thing happens. Any clue anybody? Thanks