Gorgeous tank - if you haven't read through your first few posts in awhile, you should! You and the tank have come so far. How are you keeping the xenia in check? I have some in the first tank I built (also a 4ft 75g) and it is pretty overwhelming to keep on top of. I'm also beyond jealous that your chromis don't murder each other. I started with 5, now down to 1 - they just gang up on one at a time until they die in my experience. Now I just have a big guy that's mean as ****
edit: actually i can't tell, is that goni?