[jacmyoung]

If you do the standard mod on your 6025, it is likely the pump will not be able to self-correct so the stopper mod may be necessary. And if you do the stopper mod for your 6025, you are also doing the wide flow mod. If you don't like to mess with the stopper mod, then the 6045 is right for you since the stopper is built-in.

In any case get them to be on and off often will have too much wear on the motor and prop. I would consider using the Seio controller before turning them on and off with a timer every 30 minutes. The Seio controller can be had for $140, it is extra cost but it does bring some nice benefit of true wave making.