Help with kalk reactor pump

[shyland83]

ok here is a picture of my DIY kalk reactor

http://i146.photobucket.com/albums/r280/shyland83/P1010037.jpg

I was planning on feeding it with RO water on the bottom inlet, and exiting it out to the tank on the top. the aqua lifter i have doesn't seem to be strong enough to handle the head pressure. does anyone have a suggestion for stronger dosing pump that doesn't cost a fortune?

[rivdog]

really , u shouldnt have much head, its not ur pump that should be pushing it. that is for stirring the mix. u should be using an ato or gravity feed that moves ur water

[lecher]

Move the inlet to the top and have a tube inside the reactor running to the bottom. This should reduce head pressure on the pump.