Les1 Posted March 29, 2020 Report Share Posted March 29, 2020 Hi, i am having problems identifying what the white flakes, some upto 5mm, are that have started to appear in my hottub water. I have tried adding bleach to a sample and the flakes are still there then i tried adding vinegar and the flakes are still there. I believe if they are biofilm they would disapear when adding bleach, but would they disolve and disapear if adding vinegar ? Thanks for any advice. Quote Link to comment Share on other sites More sharing options...
RDspaguy Posted March 29, 2020 Report Share Posted March 29, 2020 Usually hard water buildup inside pipes flaking off. Some people use a purge, I think ahhhsome or some such. I am not a fan but it should work. In my tub, I would lower my alkalinity to about 80 and deal with the flakes for a couple weeks. Quote Link to comment Share on other sites More sharing options...
Les1 Posted April 11, 2020 Author Report Share Posted April 11, 2020 Thanks for your response. I have read about lowering alkalinity and that was something i was considering doing. I was just trying to get some sort of confirmation that it was limescale that i was dealing with and you seem to confirm that so thanks very much. Regards Quote Link to comment Share on other sites More sharing options...
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