Hi Lisa, thanks again everyone for the nice comments. Costa13, yes..they are a pair. That was taken just as the lights had gone off. I snapped them back on for the pics, so the mandarins were doing their night swim and hunt ritual. Elbob, most of the hard corals were tiny frags when I got them..an inch or two. When I started paying attention to magnesium, they really took off. Bruder & ReeFreak, thanks on the nano. That nano does'nt stop amazing me..it is just standard 2 X 24 wt power compacts that come with the tank. The only thing I do is change them once a year. The things I modified about it were the pump..I replaced it with a 900 maxi-jet. I bought the skimmer mod, after I thought my little cassette mod looked a bit cheesy. There is nothing kept in the back chambers except a small piece of Pura-pad which gets rinsed daily, and a heater. It gets topped off every day, and water changes are performed weekly with Tropic Marin Pro. In fact it is due for bulbs, I am getting them at the end of the month.