I am not sure what water is the best & safest for my WTFs and I have several questions about it. The pet store guy said to always use distilled, but I read on this forum that the frogs need minerals so I should use spring water, only using distilled to mist. However, I'm not sure all my frogs go in the bowl. I've have only caught 2 of my 5 taking a 'dip'. Could they be absorbing all the water they need just from the frequent mistings and, if so, need misted with spring water? I mist several times daily to keep the humidity up above 50. ( Also, I am soon getting a Monsoon system which I think must use distilled to avoid clogs.) As spring water can get a bit costly over time, I tried boiling water but it seemed to have a slight oily-looking film on it after it cooled, before I used the dechlorinater drops. Has this happened to anyone else and is it safe? Do I need to boil the tap water before adding dechlorinater drops or is it safe to just add the drops? Do the drops work immediately? What is the 'stale' water some care-sheets mention? I am so confused about such a seemingly simple thing!