The change from green to clear was so sudden, I almost couldn't believe it.

I don't have a sand problem - I have a cartridge filter. I've been trying to ride the current filter, because I will chunk all filters and get a new one when I'm essentially baquapoop-free.

I'm acutally considering getting a sand filter and operating in parallel with the cartridge filter with cutoff valves so that only one filter operates at a time and use the sand filter for "heavy load" work and the cartridge filter for "pristine" work.

I'm going to see how I go thru some storms with chlorine before I pull the trigger. Baquacil was a complete and utter failure after rainstorms with all the oak trees hanging over my pool.