Hi guys. This is a floating plant with little green leaves. It's great for giving shade to fish that like that sort of thing.
I have it in tropical freshwater aquariums and a tropical brackish tank, but I think it can also live in ponds. Consult the Google for more information on that.
Anyway, it is taking over my tanks and it seems a shame to throw the extra away, so if you want to take a handful or two away, feel free (just remember to bring some kind of container in case I don't have anything suitable around). PM me if interested and we can arrange a time for collection. I live in the Bearwood area of Birmingham (OK, technically Smethwick).