DE in Pool

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bdjsgolden
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Posts: 1
Joined: Sat 12 Nov, 2016 16:04
My Pool: 20000 Gallon, Jandy DE Filter, Salt Water, Pentair Variable Speed Pump

DE in Pool

Postby bdjsgolden » Sat 12 Nov, 2016 16:13

I have tried everything to find why the DE is leaching back into the pool.

Checked all of the filter grids...no rips or tears.
Manifold and manifold pipe appear fine.
It's not a suction side issue.
There is not too much DE.

HELP!

Thanks


Denniswiseman
Swimming Pool Superstar
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Posts: 996
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: DE in Pool

Postby Denniswiseman » Mon 14 Nov, 2016 10:36

I take it that this isn't a new system and you have cleaned your filter many times as you have checked the most obvious things
Have you checked the "O" ring is seated properly or not missing?
Has anything changed recently?
Jwms
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Posts: 1
Joined: Sat 23 Jun, 2018 09:35
My Pool: 60,000 gal Chlorine in-ground vinyl liner pool, single speed pump with 72 cf with Hayward SP715 valve.

Re: DE in Pool

Postby Jwms » Sat 23 Jun, 2018 09:46

I have this problem too. I have replaced all the grids, the manifold and o rings. DE comes out of the jets upon pump start up for about 15-20 secs. I was told by pool supply house to add 9 lbs DE after full grid cleaning or 8 lbs after backwash...72 cu Hayward filter.
I am also having a problem retaining chlorine. Total is 1 and free is 0...constantly...
My water is crystal clear and looks fantastic.
I am at a loss to these issues...
Denniswiseman
Swimming Pool Superstar
Swimming Pool Superstar
Posts: 996
Joined: Tue 06 Sep, 2011 05:48
My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
Location: United Kingdom

Re: DE in Pool

Postby Denniswiseman » Sat 23 Jun, 2018 13:59

What are your numbers and how do you chlorinate
FC:
TC:
pH:
TA:
CH:
CYA:
Teapot
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Posts: 486
Joined: Tue 17 Oct, 2017 10:52
My Pool: 12 x 24 (45m3) liner pool, Triton TR60 filter with AFM glass media (Activate) and variable speed pump running 0.08HP
Location: UK

Re: DE in Pool

Postby Teapot » Sat 23 Jun, 2018 15:07

What is the CYA stabiliser level? Too low and you'll not be able to keep chlorine in the pool. Most important chemical in the pool.

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