Plant Identification

Could anyone identify this plant for me. It originally died off, but new leaves have started growing on it. I have started using it as a foreground plant, but don't want to keep it there if it grows too large. It has a rhizome which seems to double up and can be split to make 2 plants. Sorry about the pic being a bit blurry. Any help will be appreciated. Many thanks
Ian

i think its an apagenaton bulb.

i bought some of those from wal-mart a while back.

dont have them anymore though, they were just ugly and you couldnt just prune PART of the leaf, you had to cut the whole thing or it would just rot in your tank.

Fair enough, but if it is that, then how tall will it grow?