Limno. Sessili. issues

[Squeakfish]

My asian ambulia appears to be living quite comfortably in my 40.. but it's losing all the leaves on the lower half of the stem.
Why is this?
The lighting is.... 2 65w bulbs, 7000k I think. One is white, one is blue.
I can replant a cut piece and it will shoot straight up to the top of the tank, but never fails to lose its lower leaves.

 

[Mgamer20o0]

its not getting lit on the bottom the top is blocking the light.

 

[Squeakfish]

How to fix..?

 

[fishorama]

The blue, actinic, light isn't helping much, you'd be better off switching it to white

 

[Squeakfish]

The blue light adds a nice touch to the tank, and makes it easier to transition my fish from daytime to night. Plus, it really softens the harshness of the white light.
I do not want to change the bulbs out if I can avoid it..

 

[247Plants]

If you are running 1 65 watt actinic and 1 65 watt daylight bulbs, you are only getting 65 watts worth of usable light from the bulbs.

Actinic isnt the right spectrum for plants.

 

[Squeakfish]

Well, I've had no trouble growing plants. I was just wondering why this particular plant is doing what it's doing.