KH doser blockage

[bkelly]

I auto dose KH with Sodium Bicarbonate and i am getting build up were the line goes into the sump thats causing the line to block. It actually blew out the connection to the pump this week from it being blocked. Ive been sticking a dowel up the line to clean it out. Is there any way to prevent this.
I use a 1/4 inch RO line from my doser to the sump and ive experimented with the line going into the sump water and dripping from above the sump seems to clog both ways , i could put a check valve on the line perhaps. Or different line?
Has Any one dealt with this.
Thanks