Bucky, that is wonderful, love how it is tucked in next to your deck, love the dual waterfall. Fantastic job!
Our green frogs, prob the same as yours, like ponds without fish, but they tend to be territorial, i.e. one frog per pond. My one stream pond had 7 at one time, the smaller ponds/collection pools usually have only one frog per pond. The lotus tub has just one green frog, it belongs to him.
It will be fun to see where they settle. You might want to put some plants / wood / rocks in the mini pond for cover for the frogs, they don't like to sit in the open.