After doing some quick research I'd probably go with this. Its DC, so noise is cut down. At 180 watts youd be able to power it using an ecoflow for a little while. Id consult
@richiev on this..hes a wiz at calculating this stuff and can give you an honest answer.
Its cost effective enough that you can run two of them and get a substantial amount of flow. Vectras are nice, but when you consider why you are going thru all of the trouble to do the CL (avoid any and all additional pumps in the display) you wanna get the biggest bang for your buck.
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Even an L2 will only get you ~2000 something after head pressure. That won't be enough to accomplish the goal of no additional pumps in the display unless you're just planning on housing softies.
I've never personally ran jebaos, but if I were on your position I'd give em a shot. My pockets ain't deep enough to plumb an abyzz nor power a reef flow 24/7.
@Patio is right tho, where the bulkhead and tank meet will always be a concern. I keep a paranoid eye on my external overflow when I see a trace of salt creep come from it. If it were at the bottom of my tank, I can't imagine how paranoid I'd get.
If you're going to go through with this, plan plan plan...do it right the first time, even if it cost more..there's no sense in going through all of this only to find out that you need two mp-60s, four gyres, and a couple tunze AFTER you went through the trouble of plumbing a CL.
Get quality fittings and don't go cheap on the ball valves, gate valves, and unions. You WILL have to maintenance the plumbing. If its easy to do you'll be more likely to do it.