I have had fantastic luck with huge plants, tons of blooms, until last year. Wondering what has changed in my ponds. Amount of sun has not, fish size has increased in both ponds, filtration is the same. I typically divide them every spring, which I did not do yet this year. Thinking about leaving them as is, and just adding fertilizer tabs/spikes and see if any different. Wondering if the tubers get to be a certain age, and get weaker? I think I usually keep the largest tuber in my pot, and gave away the others. Maybe I need to keep younger smaller tubers this time. Hmm ...Mmathis, are your lilies in full sun, or part shade, or ??? I think that makes a difference, too. Most, if not all, can easily go with just 6" of water over their pots, but the larger types I think prefer to have more space to grow "up" before they grow "out".