Originally Posted by Alasse12
I just fill a 5 litre bottle with tap water and leave it a day or two to allow chlorine to disappear. Then I use that and when it gets low I fill another one up, ready for when the first one is used. Therefore I always have suitable water available. Rinse and repeat...
Certainly cheaper that way. Is there any definite evidence that tap water would be bad?
Think I'll probably do as you do and occasionally add the water treatment as a bonus calcium source.