How about Lotuses? I'm new to them, probably won't grow for me, but would
appreciate info about depth, or anything else.

If you are in zone 5-11 they should grow....They are harder to grow in the
pacific Northwest, but there are even a few people here from that area that
grow them....Lotus like 1 to 36 inches depth.....again it depends on the size
of the lotus....a teacup or bowl lotus only an inch or two and something like a
Mrs Perry Slocum will go down a few feet with no problem...I do however have a
Mrs.PS in a bog that is usually just mud. Jerri

http://www.fringeweb.com/Ponds/JerrisPond