Can Muriatic acid be used to remove PhosFree from a Pentair cartridge filter?
If so recommend ratio acid/water.
Manual spraying is difficult and not terribly effective. Looking and feeling deep inside filter pleat it still is slimy
We are in the process of lowering our Phosphate ppb from >1000 to the recommended level.
We are on our second round of PhosFree cleaning the filter (we have two and alternate) between treatments.
Currently Phosphates @ 500 ppb.
Thanx you for any/all advice!