The Friday File: In addition to semiconductor, chicken wing, and lumber shortages, you can add chlorine. When Covid-19 first, hit DIY handwashing solutions often recommended adding chlorine powder. Add to that a surge in the demand for pools, and a fire in a chlorine manufacturing plant, and suddenly chlorine prices are up 36% Y-o-Y. Making things worse, new pool demand is up 20% over 2020’s strong number. Prepare for Poolmageddon.