will this work? Siphoning from tank to tank

[2pts]

Hi all, so I have my 130ish gallon 3'x3' reef ready tank which has 2 holes drilled in the bottom of the corner overflow.

I just added a 6' long 125 gallon tank beside it. This is the only spot my wife will "allow" me to have the new tank, she is not happy at all that I added another tank, but thats another story.

The 6' long tank is reef ready, with 2 corner overflows, both with 2 holes.

The way it stands now, I have 1 sump with a pump in it that (barely) pumps water up from the basement (15' of head pressure). I have several powerheads (7). Money I dont have, though I do have a gift card for home depot that I can use for various plumbing supplies ( I already have more than half).

What I'm contemplating, sorry bout the quality of pics...



Going to keep the pump from the sump only to the 3' tank. Raise the drain to an emergency only height. Use some (I have no idea how many) "U" shaped clear tubing to make a siphon(s) from the 3' tank to the 6' tank.

In the 6' tank, have 2 herbie drains, with 2 emergency overflows.

My theory is, something goes wrong with the siphon(s), the 1 1/2" emergency drain kicks in on the 3' tank. 6' tank carries on with it's powerheads untill I notice.

During powerouttage, the siphon(S) continue on untill they empty the 3' tanks overflow box to the bottom of the siphon hose's stem. I can live with that.

I realize the danger of running the 2 tanks like a "daisy chain" as far as disease outbreak goes, but what else could go wrong?

Thanks, Shawn.

PS, I'm moving the light switches, and all circuits are gfci protected.