| Based on research I did online, I would stay away from the CPR c-channel style overflow. Most of the folks I talked to had lost siphon on it more than once and had overflows. Wildcat is correct on the flow rate issue, but I would recommend that you look for a U-tube based overflow box. I've got two in use that made by Aquaclear Aquatics and I've never had a siphon break or a failure to start draining after a power outage. One of the units has been in use for 8 months and the other for 3 months. HTH
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walt
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...and I thought woodworking was an expensive hobby.....
75G Oceanic Reef Tank, 30G Acrylic sump, 12G fuge, AquaC EV-120 skimmer, AquaMedic Kalkwasser Reactor, Mag 12 return pump, FlexiFlow dosing pump. 2-250W AB 10,000K MH, 2 95W Actinic VHO Sorcerer's Home
Office Reef - 12G JBJ Nanocube, Minijet 606 pump, 50W heater, 12lbs LR
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