i need to run about 30 of the 2.5 watt bubblers i was thinking maby using wood to make a muffler box that used a PC fan to house and muffle all the bubblers without them overheating has anyone done this befor? maby instead of wood i could use 2 rubberainds, 1 small rubermain inside a slightly larger one. then filling the "gap" with water, and use a pc fan to coold the bubblers whats do u guys think, any other way to to muffle the noise of that many bubblers