Borax test Strips and cloudy water

[Watermom]

I have no knowledge about with a cartridge filter, but in a sand filter, when you add DE, you don't get an immediate rise. It takes a while. I learned that the first time I added DE to my sand filter. I added some, saw no pressure change, added more, no change, added more, ............... Then, awhile later, I had a plugged filter and had to backwash.

[deep_blue]

good information !

I have tried the DE with my Pentair cartridge, (it is a 50 size ... ) could DE get through a good cartridge (almost new) and get into pool ?
It was put it in skimmer, maybe the DE stayed in the cartridge but my pool still was cloudy from algae or water mold.

Looks that cellulose fiber is a better choice for cartridge filter enhancement ?

Also, I have a slime filter bag that works really well but the on & off of it would be better suited to the cartridge filter & cellulose fiber if that works well?

I am bringing up my borax levels to 40 ppm and balancing my PH & TA & CL since I survived the algae and floating lint "a water mold?" with shocking and look forward to a clear pool.


This forum seems to be better that the best pool store advice that is a good thing !

Thanks.
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