My first idea was to do a hemianthus micranthemoides background, but then I saw a scape a bit like mine using this plant in the background and I didn't like it. It was too bushy, taking over all the twigs, not a natural sight.Very nice, myriophilllum guyana or some hemianthus micranthemoides would fill the background nicely adding the 'forest' effect. 🙂