When one of my lilies jumps the pot and puts out a bit of roots that get covered with muck, I can barely lift it out to groom it. This is a lily a bit bigger than a oil pan. I call dear hubby to pull it out for me if it is too heavy.
The lotus are only in a contained pond, 300 gallon they are free to grow as much as they want, in that pond. I tried to push in a bit of fertilizer last year, nothing but tubers and roots. They have packed it tight.
I had a small, two foot tall, lotus in one of my small ponds in two years it jumped the pot filled the pond with tubers and roots, I yanked it out. Took a lot of yanking.
They grow like crazy so if you ignore them for too long.............good luck!
I don't let them go crazy. Doing my best to save my hands, back and arms.