In addition to what the others said, I would add that it can be fussy and up and die sometimes. I finally decided it didn't retain a lot of nutrients within it, so when I was a little slack on my dosing, it went south fast. I grow in a lot higher light than most people though, so part of it was my fault.
When I've had it too it also puts out seeds you never see and months after you've gotten rid of the plant, you'll be looking in your tank and Elatine triandra babies are sprouting up everywhere.
When I've had it too it also puts out seeds you never see and months after you've gotten rid of the plant, you'll be looking in your tank and Elatine triandra babies are sprouting up everywhere.