strong base so gives you more "bang for your buck"
I knew it from the early days, my dad was a painter he used it as paint stripper. Mom used it on blocked syphons under the sink.. Cabinet makers use it to preserve hardwood and give it patina. I know it's a strong base but it never occured to me that water companies use it on tap water.. But makes sense with all the copper pipes around. Now it is mentioned i still have a bottle horticultural pH+ left from my growing vegie days in case i droped in to much pH-. It contains KOH and KHCO3 actualy equaly agressive. I more often used it for cleaning off calcium deposit in the toilet than on the plants.