You may have known that I have started to build a vivarium. In the vivarium I have a waterfall, that leads to a stream, then eventually to the pond. Using the false bottom method, the pond will always be circulating. In the pond, I have bought some hornworts and java moss, to give it a tropical look. Is their a cp I can use either in the pond or near the pond, that will look great while, they will be feed happily =D. There is going to be a lot of action in the soil, from decomposing plants, decomposing frog droppings, and decomposing bugs. These will create a lot of bacteria, and I'm guessing it would be a great place to plants some ultrics. So, I was wondering which ones would be prefably (i can't spell that word for some reason) prefeably argh, anyones which ones do you guys prefer that would be very pretty and not a danger to tadpoles and frogs, while being accustom to, humid and tropical surroundings. Plus they will have extra food such as daphnia.