Which pump did you use to test the surges with? or was it from a household feed?

So far it was just the hose... I need to finish building the stand so that the tanks are off the ground and then run a hose to the pumps tosee if they fill fast enough to "flush." I think the LG will, and hopefully the Sedra as well (then if nothing else they can be my "night" pumps and I will buy a dart or the likes for the day... it is all experimental. I will let you know if a day or two how they turned out.

Filling fast enough was one of my concerns,and of course having a substantial safety overflow, how often did it surge using standard water pressure?

Sorry Mr.OM;
I did not time it- but just around 2:00 ( the tap was not on full. The stand is now built, so very soon I will know what it needs to "flush." I am going to run the surges pumping straight from my display tank for the first tests. I still need to do a lot of plumbing before it is actually "done."

Pictures of the stand for two of the surges (the celing in the basement is lower than I would like.)
http://i621.photobucket.com/albums/t...1/IMG_3126.jpg
http://i621.photobucket.com/albums/t...1/IMG_3127.jpg

I would seriously oversize the overflows in the DT, when either of those surges kick in they will become siphons and dump very quickly a 2" siphon will be too much for a standard 1 1/2 drain even if you have two of them, unless there is a ton of room in the display to handle the new volume of water rushing in.

Sweet someone else who plays with surges :) I noticed my carlson surge required a overhaul once I added salt to the mix - worth keeping in mind...

If you want - I've got a 65g (36x18x24) sitting around the side of the house that has a cracked corner on the bottom - yours for the price of picking it up :) If free/repairs required is still enticing you...

Cant wait to see how yours works

Any updates, love to see this thing in action.

+1 on seeing this is action.

Also maybe a post name change, "How to flood a basement all while draining a bank account".

Good luck.