cheese/booger like substance forming around waterline

[aarron]

So I just got my hot tub a week ago.  it was used.  A 2015 that looks to be in good condition.  I have been testing the water daily.  Mid week I shocked it because the water got a bit cloudy.  Also used enzyme and raised PH a bit.  A BUNCH of yellowish scum was in the foam, and settled as this gummy stuff on the water line.  After a couple hrs of running jets and cleaning, it finally got better.  Shocked 2 days later and a little more came up and it was whitish color.  What should I do?  My water is now crystal clear and tests are showing good water.  Thanks

[Conine2965]

Probably just build up should be good now. But if you have concerns you can buy a spa purge product. Then refill

[aarron]

thanks for the response

[bradleyabell]

Probably just build up should be good now. But if you have concerns you can buy a spa purge product. Then refill

Agreed. The chemicals in your spa try to form larger particles so that your filter can suck them up. Sounds like it’s working!

[bud16415]

I would be tempted with any used tub to run a purge product thru it with the first filling unless I knew who had it and knew they kept up with everything perfect.

With a used tub you might not know how long it was stored untreated etc before you put it into service again.