Hi Musiche! Thanks for the friend request. The big plant is really several anubias "nana" put together to form a tower. lol It's hard to keep it looking that way, as it tends to slide around. Just today I did a 40% water change - now it'll take 3 days to get it back to normal.
You could also plant it into a slanted container of some sort - I'm just playing around, & this seems to work fine. If you have time, take a look at my jewelry pages (yah, off topic) theperfectjewel4u.etsy.com and thependantpatch.etsy.com
I came across a picture of your 125 gallon tank. Beautiful!! I was wondering what the big bushy green plant with the larger leaves is, in the middle of your tank. If I had to take as stab at it, I'd guess Lobelia but I'm probably wrong.