I'm trying to ID this water lily. It's on a 12" plant shelf and seems to like that depth. It also appears to be a very aggressive growing lily. I planted it late last fall and already have 3 new "sprouts" this year that likely need to be divided soon. I did take a picture with a penny on the leaf for size reference so hopefully that helps as well. If I can answer any other questions to help with the ID please just ask. Thank you!