Mwahahaha! Welcome to the darkside!
The tank looks great Burbot. Great use of the rocks around the plant bases too. If you've been stuck finding the Coal Slag, try places that rent sandblasting equipment. That's where I got mine from. I just mixed about 20lbs into my 125 with the PFS and they bichirs colours darkened right away and have stayed even now that it's mixed.
BTW, your ornate is freaking HUGE! That's awesome. I need to get a hold of a few babies to try and grow out to full size.