Hi all In my previous fish pond I had a large amount of floating Pennywort. It was given to me by a work colleague and it was excellent for covering the surface. It grew very quickly but I just used to cut it back every few weeks in the summer. I have since moved house and now have a new pond but I am struggling to find a decent plant to cover the surface. Pennywort has now been banned from sale in the UK. I have tried several creeping plants (can't remember the names off hand) but they have failed to increase in size. I do have a nice Lily which looks great but obviously it dies back in winter leaving the surface exposed and therefore the water turns green in Spring, despite having a filter and UV filter. Has anyone discovered a vigorous surface plant? I wish I had taken a bagful from my old pond.