Hey folks... Wondering if anyone has any experience with Stockman standpipes in HOB overflow boxes. I think I need one, but I'm not sure I'm up to building one myself. Stockman now has a deal with Premium Aquatics and they sell his standpipes there, so I'm thinking of ordering right from them. They say that model is only 6.5" tall. Stockman Aqua-Silencer Overflow Model: Premium Aquatics Any input on the pros and cons of these things would be appreciated.