White hard buildup on vinyl liner

[reddolphin]

Yes, the water softener pellets were for the salt in the SWCG. This is the first year we've had it. The build up has been going since last year though. I could be wrong, and I will ask my husband if it was water softener pellets or salt that he used. It was in the lawn and garden, next to the pool salt. These were a few bucks cheaper, so went that way.


We swam in the pool today.......was awesome. The stuff is starting to come off the sides. It is leaving behind some green yucky stuff like it did when it dissolved in the glass. The stuff that is left on there is not as rough/hard feeling as it was before.

[PoolDoc]

Well, after promising to do so, it looks like I never got back to this thread. Anyhow, it was sand algae, and did come off once the pH was low enough. Here are the pics I was supposed to post:





and, here's my thread about my own experiences with this stuff:
http://www.poolforum.com/pf2/showthr...111-Sand-Algae