I left for NYC 5 days ago and just got back. I have two frogs and they have a little tank, not little but a good tannk for their size. I split the tank up one side land and the other water. the water side is very small and quite shallow just about covers their heads, the frogs aren't that big at all. I come back to find around 10 baby tadpoles in this water... i assume my frogs might have eaten some. I would like to save them but I do not have a filter system. I was thinking of bringing them to my friends house. Do they need filtered water? Also what kind of water can I use for them? Could I take his fish out and put them in that water??Thanks for the help guys!