DE added to cartridge filter

Oct 2, 2010
1
I have an inground vinyl liner pool, I was told that adding DE to the cartridge filter would clean my pool water better.... It did but now I have whitish residue stuck to the bottom of my pool liner.... now can I clean and remove it from my pool????
 
Welcome to TFP. It should vacuum up if it's DE.
Can you give us a full set of test results?
pH
FC
CC
TA
CH
CYA

Adding DE to a cartridge filter may not have been a good idea. Some mfg's say it's alright to add a little but some cartridges will be ruined by adding it.
 
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