Yup, you are right. I am very lazy and honestly I dont know how to maintain a sand bed. I also did not want to deal with sand storms. With just one powerhead, I would have sand all over my corals and that annoyed me. Now that I have close to 2000gph in my 29g tank it would be even worse. It is really not that high maintainence really. I pretty much have the same setup. BTW, did you continue to read the thread? It was pretty cool right? Did you see the carribean corals. They are illegal to own but he got them from doing research on them.