Glad to hear your frogs are happy!
I can't get my frogs to eat flies, unless they do it when I'm not looking. I think they are uninterested because I give them crickets that are on the large side, and they are used to that.
Be careful when putting your plants outside, put them up on something like a table... because snails will also lay eggs or whatever they do in your plants, and they tend to take over once they start hatching and it's pretty hard to get them all out of your tank... I missed one when cleaning them out of my tank... and luckily the frog that ate it passed it.