wish2fish 0 Report post Posted January 7 Prior to switching to the @ease system I removed my filter and replaced with my backup filter. The filter was coated with a chalky white substance. If you put it between your fingers it has a gritty texture. Everything on the outside just washed off but still has some of this substance in the pleats. I have tried warm water, soaking in cleaning vinegar and finally tried the filter cleaning tablets. None of these have dissolved the white substance. I've had this spa for 5+ years and have never encountered anything like this. What is this stuff and does anyone have suggestions for getting it out of the pleats. Share this post Link to post Share on other sites