I see everyone else's ponds and they have this massive crop of plants growing in them. Some of them are floating around, some would appear to be anchored plants that have roots rooted into dirt somewhere. Well my question is, how do you have this if you have a pond liner? I can see being able to grow all these plants in a pond with a dirt bottom. But with a liner, how do they get so big with just a pot? I must be missing something here... my plants never seemed to want to get any bigger than the pot they were growing in.