even if you don't need one, bubble walls are lovely to watch and if you have got stupid fish like i have they will love it, think of it as a another toy for your fish
very easy to do, small pump, some airline with non return valve and a long air stone, thats it, really creates some movement in your tank
good luck with your new tank, remember "fishless cycling = happy healthy fish"
Arran
"never buy a stupid dwarf, its not big and its not clever