powerheads for Kalk Reactors

[Dez]

Anyone have experience with the impeller shaft wearing out super quickly in a kalk reactor? How do you prevent this? Or what powerheads are you guys using? My kalk reactor is the exact same dimensions as Stephane's (I don't have a link to the pictures of his reactor, but if you read this Stephane, can you post a link?)

I'm using a MaxiJet 600 and it wore out in 2 months and started rattling...argh.

Any suggestions?

Des