DrBDC
Active member
Saturated limewater is right about 2 teaspoons per gallon so a tablespoon will take it just over saturated and any impurities will precipitate out(which is good). That's how I use it myself. I didn't drip it for long but whenever you're messing around with the tank or just checking it out reach over and squish the end of the tube and a little buildup will break off. I found using the air valve higher in the drip tube with airline after it kept the valve from clogging and most buildup would be on the end of plain hose vs. in the valve.