Received my 2nd half of the package for my Aquatop 21g cube a couple days ago! For those of you on the fence go for it! It is well worth the money. Richard is laid back and easy to work with and he hooks you up with great rock and live stock! My 4 pieces of base rock kept me entertained for hours....so much life to watch tunicates, sponges, barnacles, crabs, urchins, live corals, etc etc...and that was just the base rock. 2nd order had so much stuff I had to work at it to get it to all fit. Ammonia levels barely rose past .50 before dropping to zero after just a few days. Thanks Richard! I will post pics here in a bit.