is there a patch kit for pool filter cartridges?
After spending $380 last summer for replacement cartridges I now see that debris is shooting out of the return ports as if there is a hole somewhere in the cartridge flutes...I just cleaned them all for the third time since last summer with a regular
I, too, have a cartridge filter and I've never seen or heard of a patch kit. You don't say where you got your cartridges but you might contact them to see if they'll do anything. Otherwise, you'll have to replace the one that's defective.
> Full Case of 6 - Intex Brand Type B Pool 
> Full Case of 6 - Intex Brand Type B Pool Filter Cartridges - For Intex 2000, 2500, 3000 3500 & 4000 GPH Filter Pumps - Made in China Save
> Full Case of 6 - Intex Brand Type B Pool Filter Cartridges - For Intex 2000, 2500, 3000 3500 & 4000 GPH Filter Pumps - Made in China Sale
Pool Supplies: Pool and Spa Supplies Pool Supplies Pool Pumps Filter Cartridges Filter Decorative Pool Supp... 
Pool Filter Cartridges: Maintaining Top Performance With Regular Rotation and Cleaning: While changing and...