Okay, so I've had this single stem of Hygrophila sp. 'Araguaia' for over 6 months. When I got it, it was barely 3" long. Well, so far, it hasn't grown a milimeter. It's in a tank with Flourite substrate & dosing with Flourish Excel,. Am I missing something? It's not dying or losing any leaves. It's just not growing at all. I'm half tempted to throw it out.
Here's what the plant looks like:



Here's what the plant looks like:


