- Aug 25, 2011
- 589
- Pool Size
- 15500
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-40
I've got a couple of sets of the ultra fine cartridges for my dolphin supreme m4, which is now into it's 7th season. They look pretty grungy. Is there a recommended way to clean these a bit (maybe a muriatic solution or something?) or should I just celebrate that's I've effectively got about 3 years worth per set (only about 5 months a year of pool being open though).