So there's a bucket in our garden that was full of moss from the roof and then filled with rainwater. We appear to have tadpoles in it now. They seem to have eaten a lot of the greenery and now there are fewer of them, as far as we can tell. I don't think they'll have enough food. Is it okay to take the bucket and empty it into a local pond? I know you're not supposed to interfere with them but it doesn't seem right to just leave them to starve in a bucket.