Originally Posted by Reefing Madness
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?
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!
When I ran the 46, the sump was an afterthought. If I have a tank with water in it that I want to add a sump to, then an overflow box is the way to go. I usually try to plan for the future and add what I want at the beginning of the build, so I would drill the back of the tank to have an overflow if it were not "reef-ready". Members here have used Glass-Holes and liked them. I might just do a coast-to-coast because of the low cost of it if I ever decide on the sump route again...