Bad quality water is poisonous for betta fish. It can be brought on by substances that happen to be launched on the tank. This might be right within the form of chlorine and heavy metals in tap water, or indirectly from fish waste and uneaten food. Internal electrical power filters https://betta-fish-names80111.blog5star.com/23973292/a-simple-key-for-betta-fish-gh-level-unveiled