My issues are nearly identical to yours. My pool is also only 2 years old. You determine the cause from your side? I have stonescapes pebble and the installer was basically a first time installer (found out later) and made a bunch of mistakes. I’m not sure if it’s related or not ..
Hola friends. Been getting this white powdery substance on the floor of my pebble (SWG) pool for a couple weeks now. Also robot vac is scooping it up. Any idea what this could be ? Calcium levels are normal range…