Quote Originally Posted by Rychek View Post
I've read looking into this sort of setup recently, so THANKS!

I've read elsewhere that the diaphrams in the aqualifter pumps will wear with time and become less efficient, thus reducing the total volume of liquid moved per minute. I don't know how long it takes for such wear to have a significant impact on a tank. However, it is something to be aware of.

This may very well be true, but mine are still working just fine after 6 (actually I'm pretty sure it's closer to 7+ months) months. The only maintenance I've done is I've taken the airline ball valves off for cleaning.