In the last post, one of the questions I asked the spa tech with a sludge-like spa water nightmare was “What is your calcium hardness reading?” A proper test kit should contain a calcium hardness test mechanism. Calcium hardness tests were once just for swimming pools–but we’ve discovered that it is also important for your backyard hot tub. TheContinue reading “Calcium Hardness–It’s Not About Your Bones”
Pool & Spa Master 