DRThompson
2018 FMAS President
We us hydrochloric acid with di water at a ph of 2.0. Pool acid would work too. Wear safety goggles while mixing and other safety measures recommended by the manufacturer. Collect it in a bucket as Dr T. states. I like to leave it in the lines for a little bit with ball valves. Then I flow a few gallons through, or until the water coming out is clear.
Jeremy
Citric Acid is an alternative also. I use it to remove scaling and to clean pumps/equipment. You can buy citric acid at grocery store or online.
HCL is VERY caustic, not sure it's for everyone.:twitch: