plumbing and return pumps...

[know-it-all]

I hear that Amp Masters are very popular
I used a Velocity T-4

[crvz]

Originally Posted by Wiskey

In this application I would use an external pump.

Whiskey

See that I don't know about. I've had only small runs for plumbing, so I'm not real sure how it plays out. but...

Originally Posted by Wiskey

I should also say that there are allot of external pumps that make much better pressure pumps than the internal Mag 18. That's what I ment by "Pump stronger".

Whiskey

Originally Posted by know-it-all

mag 18 is like sticking your wallet out an open window doing 80mph down the freeway

External's usually are more efficient pumps
last longer and easier to clean

the headaches will come
1. from a cheap external pump that has a bad seal or a cracked housing.
2. from an internal pump that adds heat and may not be pressure rated for what you want to acomplish

I'm not sure I understand KIAs analogy. A couple of things;

First, how many gph's is Amy going after? I think we're in the 500 gph max from the sump to the display. If she can get 1" plumbing, going back to the RC calculator we're at ~550gph with the mag 18.

We're not talking a closed loop. I'm not sure we're worried about pressure rated. Externally, that's what you'll get. But in terms of effecencies, internal pumps draw less power when put under pressure. When I used a mag 18, I dialed it back with a valve to about 400-500 gph and measured the power draw at 63W. It's rated at 120W from Danner. I've since swapped to a Mag 9, which is pushing about the same gph, and it's running (as we speak) at 59W, dialed back with a gate valve. That pump is rated at 93 watts from Danner.

An external pump, in my understanding, is going to run at it's rated power. When we're concerned about sustaining costs, that can't be ignored.

Heat wise, I've never had a problem at keeping the tank under 80 degrees. With 200 gallons and a bunch of space in the basement, I can't imagine it being terrible hard to keep the tank temp down without a chiller (although a fan over the sump may need to be employed, and with that any humidity concerns).

[Wiskey]

I hear that Amp Masters are very popular
I used a Velocity T-4

I've heard good about them too.

I love Iwikia's,.. or however you spell that, they've been around forever and have always been a reliable pump,.. I use one on my 180.

Whatever you get, make sure it's a pump that's pressure rated,.. not a flow pump (like a dart) used for closed loop systems.

Whiskey

[know-it-all]

Chris
she needs the pressure to pump up 12' and over 30'

[crvz]

Originally Posted by know-it-all

Chris
she needs the pressure to pump up 12' and over 30'

Right, but I don't understand two things; a) why it's like sticking your wallet out the window, a b) why a mag 18 wouldnt work?

[YLChik]

Originally Posted by crvz

Right, but I don't understand two things; a) why it's like sticking your wallet out the window, a b) why a mag 18 wouldnt work?

u t

I have to agree in my not understanding of those things....

what is pressurerated? How can you tell if a pump is pressure rated?

[dobejazz]

Amy I run an external pump and I get tons of bubbles where the return drains
(I know 2 totally different issues) Maybe I get so much turbulance since my drain is straight down?

[YLChik]

what pump are you running Kelli? How do you have it set up with your sump?
got any pics

[dobejazz]

Originally Posted by YLChik

what pump are you running Kelli? How do you have it set up with your sump?
got any pics

I knew you would ask I'll go take some

I am using a Dart as the return - But Geoff questioned that so I'm thinking it's not the best pump for my application

(the dart was part of the package when I bought the tank)

[YLChik]

so many choices in this hobby

[Wiskey]

I've talked to you about that too Kelli,. A dart is a high flow pump and not the best choice for a return.

If I remember right you told me it works. It's impossible to argue with that logic

I would definitally look into a pressure rated pump,..
Something like this is a good example,.. notice it says "High pressure" and it has a max head of over 26 Feet,.. that's another indicaiton of a pressure pump. This is the pump I used on my skimmer:
http://www.marinedepot.com/ps_ViewItem~idProduct~PI1211.html

Here's another example,.. in the Iwkia line the RLT pumps are for pressure applications:
http://www.marinedepot.com/ps_ViewIt...ct~IK1143.html

Whiskey

[DarthOcellaris]

to add to the confusion ....A Sequence pump will lower it's wattage consumption automatically when the forward pressure is greater. Amy, you were mentioning power consumption. Not sure if ALL external pumps do that but I know the Sequence ones do.

IE, if you put a valve on the output of a Dart, the pump will not suck as much juice from your wall.

[dobejazz]

OK a disclaimer

I know NOTHING about plumbing Hopefully these pics are what you are looking for

[dobejazz]

[Wiskey]

Can you post pics of the drain side Kelli? So she can see the bubbles?

Whiskey