Recent content by mbug

  1. M

    Black areas in grout

    It's this product: https://b2b.asekopool.com/en/catalog/19-poolchemikalien/77-algicid-20l.html Active ingredients: Epichlorohydrin-dimethylamine-copolymer Can't see anywhere if thats the same as copper. Perhaps you know? :-)
  2. M

    Black areas in grout

    Hi, First: English is not my first language so please excuse my spelling :-) I have a 15 year old indoor pool, owned by me for 5 years, size 22 m3 (5800 gallons). In March this year, after I got a small leak in my chlorine dispenser, I decided to "upgrade" from chlorine to hydrogen peroxide as...
  3. IMG_20201010_111552 (1).jpg

    IMG_20201010_111552 (1).jpg