guppy fan
Fishaholic
I know that when you leave water out to age, befor doing water changes, that it can reduce the amount of chlorine in it. Does amonia also evaporate?

.I have 2x 30lt carbouys that I fill from the tap and add de-chlorinator. I then leave them in the room by the radiator where my tanks are (with the caps off) for a week (ie. between water changes) This takes the chill off and just helps to condition the water, me thinks![]()