Thus, depending on water chemistry and magnitude of use, the cell will require periodic cleaning in a mild acid solution (1 part HCl to 15 parts water) which will remove the buildup of calcium compound crystals, such as calcium carbonate or calcium nitrate. Excessive buildup can reduce the effectiveness of the cell. Running the chlorinator for long periods with insufficient salt in the pool can strip the coating off the cell which then requires an expensive replacement, as can using too strong an acid wash.
The cell's performance depends on water chemistry and usage level.  Periodic cleaning with a mild acid solution (1 part HCl to 15 parts water) is necessary to remove calcium compound crystals like calcium carbonate or calcium nitrate that build up, which can reduce the cell's effectiveness. Excessive buildup can necessitate expensive replacements if not addressed. Using an overly strong acid wash can also damage the cell coating and require replacement.