Plumbing remote sump: 90s ok?

[smokinreefer]

Gotcha on plumbing the frag tank.

I get what you mean on the secondary pump.
Hopefully I can find a good pressure rated pump.

From what I have read, the D.C. Pumps just don't perform well under pressure.

[tang daddy]

Basically you have one pump going half way then another pump inline pumping it the rest of the way, if you run an external like a dart gold you could get away with one but....a guy on the island has gone through 2 so not sure if those are the gold standard nowadays lol.

[sphelps]

Run 1.5" for all three lines, 3/4 return is would be silly for a tank that size, would expect a plumber to know better

You can use the head loss calc on reef central to estimate total head pressure and while frictional losses are totally dependent on the pump flow rate the pump you'll probably want will end pushing close to twice as much flow through 1.5" vs 3/4".
http://www.reefcentral.com/index.php...oss-calculator

Also I don't see any issues with horizontal runs and a herbie drain. All lines should have some slope back towards the sump for drainage and the sump needs to be large enough for the back flow. Other than that, not much else to consider.

[smokinreefer]

Yeah I've been reading about the reeflo and iwaki...
Guessing I'll have to go external on the return pump.

Ok, I'll run atleast 3 x 1.5" lines...

And I will probably put a check valve in near the sump to prevent too much backflow.

[smokinreefer]

Would it be recommended to have the return line into the tank be 1.5" as well?

Or tee it off into 2x 1" lines before it gets to the tank?

[smokinreefer]

So here's my plan for return line plumbing:



Trying to figure out which return pump I'll need...

I threw this into an online head loss calculator and it comes up with ~10.
Does that sound about right? Pretty much only the vertical height impacts it, the almost 20' horizontal runs are near negligible?

Thanks for your input!

[Myka]

Originally Posted by smokinreefer

Ok, I'll run atleast 3 x 1.5" lines...

And I will probably put a check valve in near the sump to prevent too much backflow.

I would suggest skipping the check valve. They don't work very well anyway, and just another thing to mess up/need cleaning.

I'd also suggest considering making your siphon line a 1" line, not a 1.5" line. You'll probably be able to get around 1700 gph through a 1" line with that amount of drop. The horizontal section will mess it up a bit, but a smaller drain is often better than a big drain because it runs faster and flushes the air out.

Originally Posted by smokinreefer

Hmmm... no horizontal runs...
I have a roughly 14' horizontal run with maybe 8" of play in height...

Is there another quiet drain set up more suitable for my situation?

Yeah, in an ideal world. That 14' of horizontal run will affect the head pressure of the drain and it will not drain nearly as fast as it would if it was straight down. Make it slope as much as possible.

A Bean Animal drain has two drains flowing, and one dry drain. Maybe something to consider, though I don't think you need it.

Have you seen this website? Very good information on drains. http://gmacreef.com/

Here's the link to the Herbie page: http://gmacreef.com/herbie-overflow-...method-basics/

Also, check out this thread, there is a guy ("Eud") that has a similar system as yours already plumbed up. http://reefcentral.com/forums/showthread.php?t=2531606

Originally Posted by smokinreefer

Pretty much only the vertical height impacts it, the almost 20' horizontal runs are near negligible?

That's correct, for the return line only.

Originally Posted by smokinreefer

Would it be recommended to have the return line into the tank be 1.5" as well?

Or tee it off into 2x 1" lines before it gets to the tank?

Bring your tee up so it's level with the return bulkheads. That will save you some 90s. I'd run 1.5" to the tee, then 1" out of the tee to the elbows right by the bulkheads, and then 3/4" out of the elbows and into 3/4" bulkheads. You'll get enough flow out of two 3/4" bulkheads, you just need the 1.5" to get the water there. Make sure you support the lines really well as there will be a lot of water weight in 1.5" lines.

[roblarss]

I ran something similar to your design in my last house. I ran a herby and ran 3 x 1.5" lines with flex PVC. I flowed it with a hammerhead pinched way back. My vertical was about 8' and horizontal maybe 10-12 '. I used the flex as it was easier to snake up the finished ceiling/walls. My gate valve for the herby was at the tank (less weight on lines). Seemed to work fine, the drain was pinched back a ways, probably could have gotten away with 1" but I figured why not go larger to guarantee I had enough drain size.

That what worked in my situation.