Considering the CFL is only 42 watts, the plant won't grow that large, but it's way cool....it's just that the two distinctly different life forms are sharing the same environment which may impact one or both of them
I do wonder what it will be like for the fish when the roots start to monopolizing the area.....will the nutes impact the fish, or will the fish crap help or hinder the plant...and how will you clean the fish tank?
I also notice you are showing some brown tips on the lower leaves...I would use Cal-Mag but I don't know if the fish will like that or not
keep us posted, this is an interesting concept to juggle/balance the needs of the fish and the plants