I got hooked up at Petsmart with these stems for 5 bucks.
I think it's Ludwigia repens, but correct me if I'm wrong. I've heard it doesn't like low light but I guess we'll see.
Yeh that is Ludwigia repens. You can get them to adjust by dosing Potassium sulfate. Brightwell
best I feel and shipment $0 to $3 from LNT.