Grey Matter that vanishes

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My Pool: My pool was installed sometime in the mid 1980's. I have lived in house since 2013. Vinyl Liner. Sand Filter.Chlorine Pool (No Saltwater). Since moving in I have replaced the sand (twice). New Pump, New Chlorinator, New Multi-Port on my Hayward Sand Filter.

Grey Matter that vanishes

Postby Anf15 » Mon 11 Jun, 2018 13:00

I have maintained this pool for past 5 years of home ownership. The pool is about 33 years old. This grey matter easily brushes away, but always comes back. Even when I vacuum to waste, it comes back next morning. I have tried every chemical recommended. No "local" pool person has ever been able to diagnose. Please help.
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Re: Grey Matter that vanishes

Postby ljmesg » Fri 22 Jun, 2018 11:20

Looks like clumped algae. Vac to waste, shock, retest, vac to waste, etc.

Bumped for more help.

I have same issue but mine is not as clumped up.
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My Pool: 10k inground fibreglass, Telescopic Cover, Hayward Powerline pump, Quality filter with glass media, 27kw output heat pump, K-2006C test kit
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Re: Grey Matter that vanishes

Postby Denniswiseman » Fri 22 Jun, 2018 12:29

You need to Slam with relation to your Chlorine / CYA Chart and your recommended Pool Levels
What are your numbers
Pool chemicals:
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Re: Grey Matter that vanishes

Postby Teapot » Fri 22 Jun, 2018 13:35

You already posted about this on another thread? viewtopic.php?f=48&t=8012&p=42641#p42641
Really does not look like algae, the water is too clear, just fine silt. I get that at crop cutting time, even gets through the cars cabin filter.

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