Thanks Lori for the posted link. I bookmarked it and will use it next
spring when I divide them.

"Lori" wrote in message
news

spring. Can I do this? When is the best time? If I can do it, I'm
planning on just removing the plant/soil from the pots and dividing it in
half and repotting. Thanks for any advice that you can provide.

Yes, you can do it any time you can stand the water temp.

You might take a look here on how to divide these.
http://loricase.com/ponds/repot.html