what type of overflow

[dow]

http://www.lifereef.com/siphon.html

I used one very similar to these on my first tank. I bought it used from a LFS that's no longer in business in SA. I never had it bread siphon, although I did have to clean out the siphon occasionally due to coraline buildup. Regardless of which brand you get, be sure to put a Durso or a Stockman on the drain pipe. It'll keep your aquarium from sounding like a comode, lol. I recommed the stockman, as its very compact and will fit easily in most overflow boxes. Here's a link to instructions on making one: http://lava.lounge111.net/diy_stockman_mod.htm, and a discussion on the improved design: http://reefcentral.com/forums/showth...hreadid=239116