Hi, all! I'm finally graduating my babies (8 weeks) to a 3.5 gallon waterer so I don't have to refill the chick waterer every two hours. So far, I have been giving them tap water filtered through a Brita filter which is fine for a quart at a time, but impractical for 3.5 gallons. What kind of water does everyone give their chicks and adults? Is chlorinated municipal water okay?