lilbittypen

Hello everybody I have a big problem with my filters ,I've had my inflatable Coleman Jacuzzi for about eight months now ,but I've had one to last five years Coleman only eight months old .I change my filters regularly every 7 to 10 days and everything's been fine about two weeks ago I got the error code for the water pump so I took it apart replace the Impeller and it works great again .it's been about two weeks now I went to change my filter and when I took them out there was this nasty off-white like fungus hard stuff all throughout my filters it looks nasty and I have no idea what it is or how it got there I need some help figuring it out please ... Can someone please help me out with this because I never get back in my hot tub if you . Thanks to all hope I hear from somebody.