When I did run a siphon overflow, I did a lot of research because I was afraid of flooding. The CPR CS90 (which was suitable for a 46 bow) was the best option, with the aqualifter of course. I would still only reccomend this option if it is impossible to drill the tank, like if it is full of water.I use a CPR 102. Aqualifter is recommended or a powerhead attached to bleeder hose for better peace of mind from flooding.
No, we are on the same page. I was just reminding him to break the siphon in the return pump in case of power outage. I didn't mean to insinuate that the aqualifter should be used at the return line, but I did want to stress that drilling the actual tank is better than an overflow box. Even with the aqualifter I would still get nervous when I was at work for ten hours and a rough thunderstorm would pass through. If I lost power and that aqualifter burnt out, I would pump the entire sump into the DT!I think I got lost here somewhere. A hole or 2 should be drilled into the return line right at the water surface to break the siphon, or the DT would empty through that line. I have 2 in mine. The Aqualifter is used at the Overflow Box, to ensure that all air is removed from the Weir to start the siphon again safely. Did i get messed up?