I'm so excited! I finished my rock work finally. I had to mortar four rocks together and it took me forever to get someone to come over who was willing to offer a hand to get the rocks in the tank with the acrylic rod. I drained the water from the water test a month ago and arranged the rocks in their final position. I added a 5 gallon bucket of sand to cover up the acrylic plate that the rod is threaded into. I've added a few pics here of the rock drilling process. The mortar was from MarcoRocks.com ...