Plumbing remote sump: 90s ok?

[Myka]

Originally Posted by smokinreefer

Great info people!

So should I be looking at 3 Lines?
1 1.5" for herbie drain.
1 1.5" for emergency drain.
1 1" for return line?

You would probably get a lot more flow out of your return pump if you run 1.25" or 1.5" depending which pump you use and it's rated flow. This is around 300 gallon system? You'll be using a big return pump, and the distance you describe using 1" pipe will strangle the flow. There is a point where using too big pipe diameter will cause extra head pressure on the pump too.

The size of the drain lines depends on the amount of flow and also the distance. With a Herbie drain, don't have any horizontal lines - make sure they all have a good slope downhill. Also, install the gate valve as close to the open drain end in the sump area as possible. Don't install it under the tank when you have a remote sump.

[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?

And to throw a wrench into the mix, if I have an in-line frag tank inside the stand, should I just feed it from a tee off the main display overflow drain and have one more seperate overflow line, or I suppose I would need an additional 2 drain lines for the frag tank (1 drain and one back up)

[tang daddy]

The frag tank under your display could just have some water T'off from the return pump and the drain could tie in to the emergency drain to save from adding another line to the sump.

This is quite a substantial project as the run is over 25' or more from the basement to the display. I think you will have a hard time finding a return pump that can do that and still keep a higher gph unless you have a secondary pump inline to the supply boosting it up half way on the line....make sense?

[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.