right ok, must be down to the lighting. the leaves on it from when it was in my existing tank, low light, no co2, no ferts and no substrate! are nice and green! perhaps they go fully green as they mature.
Lastly, can anyone tell me what the little brown 'spots' or 'lumps' are under the leaves? i heard something about them being due to gasses or oxygen? how do you eliminate them to make the plant look better (if you can)