It has been a while since I posted an update about my systems and during that time I have had a few challenges that I have worked through including a diatom outbreak in my fairly new 75g reef, a fish that disappeared and then reappeared a week later, working through two clownfish pairs that weren't sure if they really wanted to pair, and a fish that would eat wood. On that last item, as you may remember the "found parts build" is a 55g tank with a good size piece of drift wood. Apparently a small piece (about a 1/2" squarish chunk) broke off and one of the Gulf Killifish tried to eat it whole and the piece got stuck. These 6-7" long fish are cigar shaped and their mouth opens as wide as their body. I'm not sure exactly how long the piece of wood was in the fish, but I noticed that the fish was swimming around with its mouth open and after a little while of observation and with the use of a flashlight, when the fish turned at the right angle I noticed something in the back of its mouth. I caught the fish with a net and using some tweezer, a small pair of cutting pliers, and some patience I was able to extract the piece of wood that was lodged at the back of the mouth. I fed a soft diet for a few days and the fish seems to have made a full recovery. On a positive note, I have started keeping rotifers again and have added a basic microscope to my arsenal which, among other things, will let me keep an eye on the rotifers to make sure that the culture stays healthy.