Why is it happening? Can I prevent it?
The mineral content of your water increases every day. This is due to evaporation, which removes only distilled water and leaves the minerals behind. In time, these minerals begin depositing on the walls of the pool, creating “staining”.
Unfortunately it is not possible to prevent staining completely, but here are some tips to help minimize it:
– Drain your pool periodically to keep the mineral hardness down. If your pool water hardness is high, it will accelerate straining.
– Keep your pool clean! If dirt and debris is left on the plaster it will cause staining. We highly recommend that all swimming pool systems have an automated vacuum connected to the filter system.