first backwash - how much DE?

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shamguess
Pool Newbie
Pool Newbie
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Joined: Mon 11 Aug, 2008 09:17

first backwash - how much DE?

Postby shamguess » Mon 11 Aug, 2008 09:41

The manual for my Pentair FNSP60 says to put in 6 lbs of DE after removing and cleaning filters. If all I do is a backwash, do I still put in 6 lbs? I thought the guy who did my setup said to only put in a percentage if I only do a backwash. Help please?
Thanks


Guest

Re: first backwash - how much DE?

Postby Guest » Fri 15 Aug, 2008 21:18

The figure I have always seen is 80% of the normal DE after a backwash.

It is really a guessing game though. You could BW and then open up the filter and look at the grids and judge from there how clean you got them.

shamguess wrote:The manual for my Pentair FNSP60 says to put in 6 lbs of DE after removing and cleaning filters. If all I do is a backwash, do I still put in 6 lbs? I thought the guy who did my setup said to only put in a percentage if I only do a backwash. Help please?
Thanks

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