I have a Pentair (Clean & Clear RP) CCRP 200 filter. Inground pool (in southwest Florida) was completed in February of 2022. In October of 2022 I replaced the filter cartridge with a Pleatco PAP200-4. In the last month I noticed some slight staining on the pool floor around the drains and a reddish color on the skimmer baskets. They cleaned up easily. When cleaning the filter yesterday, I realized the orange color on the top of the filter was leaching into the filter and that is where the staining is coming from. I bought the filter on Amazon, contacted the seller and they were no help. Have a call into Pleatco. Has anyone ever heard of this?