by Amphiprion » Mon Feb 08, 2010 8:24 pm
What are you trying to do with it? If it is just to get water from point A to B, a durso-style standpipe is fine. If you are connecting it to a skimmer, then a speed drain is more along the lines of what you'll want, since it minimizes and/or eliminates any larger bubbles in your skimmer. You'll need a secondary bulkhead for that, though, as a backup (you won't be using it most of the time, since it is only for safety reasons).
Andrew
25 gallon cube in the works--all natural filtration; 250w halide; seagrass/macroalgae and anemone/clownfishes.