Does new filter cause foam?

jrguzmanr

Well-known member
Apr 28, 2010
232
Central NJ
I replaced my Hayward DE-3600 Filter with new DE-4820 and while I was adding DE for the first time, foam came out of the returns. I never had foam before, and the filter is the only thing I replaced. is this expected?
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
29,130
Northern NJ
Pool Size
35000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-60
Is the foam continuing to come out of returns or was it a one time thing that stopped after a while?
 
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