Is it terrible to pour a little bit of DE in the skimmer if I have a cartridge filter (4 cartridges inside the housing). A pool tech stated it will help if I pour a small amount (half of scoop; scoop he uses for other DE filters).
Thanks in advance.
Remember once upon a time Pentair recommended adding DE to their cartridge filters. Half a pound for every 100 square feet of cartridge. But you will obviously have to clean the mess out of the carts once it's done its job. See my old post below.