Whether you keep fish in a pond or an aquarium, there is a basic commodity which all fish need and can't live without - WATER!

Water contains all sorts of stuff.

Well water can contain algicides, fungicides, herbicides, pesticides, arsenic and metals such as aluminium, iron and manganese.

Tapwater can also have collected copper, lead and zinc from household plumbing. Free chlorine and chloramine are added as disinfectants.

Many fresh waters will also contain ammonia, nitrite and nitrate.

Water ranges from 'soft' to 'hard' . So, for the health & well-bring of your fish stock, you should have your water analysed periodically.
This site and all its contents are AllClear Water Purifiers 2004-2017.