ATO pumps/powerheads?

I have a JBJ ato system that runs a small desk top water feature pump works great I also have kalk in my topup woter and a aqua lifter does not like kalk.

Bill

[BigRedSpecial]

Nothing right now, but planning on a maxijet feeding a TLF kalk reactor. If not for the kalk reactor, I'd go aqualifter.