At the start of the spring I dug up a huge Buddleia. I was somewhat astounded at the size of the root ball. I still have it, and it is a wonderful shape - just right for my tank. I've searched on google to no avail. Although the plant is listed as a 'safe' plat to be around ponds and other animals - does anyone know if the root would be safe to add to a freshwater tank, or is it a stupid idea?!