I am helping a neighbor turn around his neglected pool. He has very high CYA level (>100+) and he has alge in pool...we are draining water and replacing (1/3 of pool at a time to avoid ground water pushing up his pool floor, etc)....Then we will SLAM it when I get the CYA level down to 30-40 range.
The real question I have is this: He as several old(ish) cartridge filters that have been sitting outside for months in the Florida sun...they look pretty dirty but otherwise appear intact. I am not sure of the age of the filters...I will find out later when I go over to his house to check on the water changing process and to retest his CYA level
Should I try to salvage these old filters with some filter cleaner solution (the usual yellow stuff available in Home Depot, etc) and lots of hosing down? Or should I have him get a new one?
(His pool is 13K gallon, concrete, Using Tricor Tablets for Cl.)....simple single speed pump and cartridge filter).