Anette, I SHOULD be able to put in more lillies, but the big koi keeps knocking them over. Even with big rocks in the pots. I can't see the bottom to place them right now either. We ended up digging in solid clay and there is one area that was impossible, I call it the hump. I think the koi slides the pots off the hump!
Trish, there have been plenty of problems along the way. I have had to do a lot of improvising and re-do's. Hopefully it will all be worth it when it's "done".