Usually I have dosed my limewater using an old Kent salt container. I have used a a piece that you turned a knob you get the desire drip(cant remember) works but drip will slow to a stop. So I bought and IV line, which seems to work but drips slower. I was thinking about getting Aqua Lifter Dosing Pump and pinching off the airline to a more desired drip for limewater. Has anyone restricted the flow of the aqua lifter and did it work.