A typical very low-variety chlorine check kit employs Orthotolidine which turns yellow if chlorine is current so it can be simple to operate. Soaked rocks can make microorganisms as well as other destructive substances that could be harmful for your fish. So, be sure that you dry them for at https://marco6fp42.thezenweb.com/the-how-to-clean-and-sterilize-water-tanks-in-buraidah-diaries-68879095