MiniPump PH Problem

[nyy fan]

I recently bough a PH made by/called Mini Pump. It moves a lot of water for a small PH (225 GPH and it is SMALL), but there is a problem. Every 4-7 days the thing seems to slip on the glass and it ends up pointing down at the substrate. Well, my tank is pretty new, so there isn't a lot of mess, but it really messes up the cc distribution (pushes it all into one corner).
How do I make this thing stick? I thought about new suction cups, but the ones it comes with are smaller than normal...
Ideas on why this happening or how to fix it???

 

[drkegel]

Make sure the glass behind it is CLEAN, no algae or anything behind it.
Take the PH out and clean the suction cups.
Make sure there are no air bubbles trapped behing the suction cups when you attach it to the tank.
If it's still slipping, then try to find new (larger) suction cups. Home Depot might have them, or a fish supply store will probably carry them. And, course, you can also try to contact the manufacturer and complain about it, or see if they have any recommendations. They usually do.
HTH, and good luck!