Ah now this is a topic I can give a lot of advise on at last

Painted reed frogs are amazing little creatures. There are 9 subspecies of Hyperolius marmoratus with another 7 Hyperolius species as well - and that's just in sub-Sahara Africa! Amazing!!!

I Have kept quite a few of these frogs and they as easy as pie to keep. I have kept mine in a large critter keeper with soil, plants and a water bowl. I have been planning on moving towards a full water terrarium. When I find these in the wild they are always around large water pans especially on reeds, the males will sit for hours calling which is a short, loud piercing whistle about one per second. In captivity they very good feeders and take pin heads to small crickets, moths and even meal worms. Im sure if a small group of 5-10 were kept together in a setup with a system like a rain chamber these would breed very easily. When setting up a tank ideally think of a water pan (like you would find in Florida) with tall grasses and reeds - not a tropical set-up like South American amphibians. Try googling Lowveld water pans, bushveld etc and you'll get an idea.

If you have any direct questions please feel free to drop me a PM.