Clean filter=clean pool water

These are pool filter grids. Twice each year the grids need to be removed from the filter and all the gunk(that’s the technical term) & old diatomaceous earth is washed away and recharged. We use our spa everyday so a clean filter is essential. I’ve owned a Pool & Spa business for over 40 years so doing my own filter work & some repairs myself saved me about $300. today. Now I need to decide how to spend all the money I saved!