Inline chlorinator

An inline chlorinator holds tablets in a chamber after the filter. A dial sets how much water flows through, and that sets the dose.

It is easy to use but easy to overfeed. Too many tablets raise stabilizer and lower pH fast. Use only tablets labeled for it, and never mix chlorine types in the chamber. Turn off the pump before opening the lid, and let pressure out first. A check valve helps stop chemicals flowing back into the heater.