Recently started helping my brother in caring for his spa. In ground, 750 gallon, custom tile, pool control room with filter, two pumps, heater. NICE tub. I started off by checking measurements, and found cya to be extremely high - followed the calculator and drained 70% of water out to start again. cya only got down to 70 - do I need to do it again? Also, calcium not even reading, so am working on bringing that up. Pretty important to get this into range? Lastly, and reason for my post - tub is getting very little use, and when using, getting foam like attached - this doesn't look like detergent - this looks straight up gross - and this is after replacing 70% of the already clear water. For what its worth, added an offline chlorinator and a new ozonator - but can't see how those would affect. ph and chlorine levels good, alk at 100, haven't rechecked calcium since adding 5 lbs of calium up product (BTW - these photos were after adding the calcium.) I only get to the tub once a week or so, so not easy to check things, wanted to get some ideas before my next trip out to the property. Thanks for any ideas/guidance at all.
Can you identify this foamy nastiness?
- Thread starter 1dhollister
- Start date
Looks like bather scum. I would do a clean with awesome stuff. I forgot how to spell it. I use it in my tub. Got stuff out i didnt know was there. And i drain and clean my tub every two weeks!
- May 23, 2015
- 24,447
- Pool Size
- 16000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
Could be pollen, we get some pollen that gets a little gross when a bunch of it gets in the skimmers.
