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Old 10-05-2004, 11:54 AM   #31
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Using the pump in the tank simplifies the plumbing greatly (you just drop the pump in the tank) but the pump will generate a constant heat. In GA, in the summer you may not want that extra heat all the time. Plumbing the pump outside the tank (you said you were going to use a rubbermaid bin right?) is as simple as drilling a hole for another bulkhead that you can plumb the pumps intake into. That line, you will want to have a shut off valve for pump maintenance.

If you go that route, you might as well plumb in a T with another shut off valve for doing easy water changes.
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Old 10-05-2004, 04:35 PM   #32
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Are mag pumps that great for external use? I know they can be used externally but I thought they ended up heating the water anyway.

I have heat issues with a mag5 and a 7 in my sump but it was ok until I got the MH's. I need bigger fans in my canopy and I am trying a fan on my sump.
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Old 10-05-2004, 05:03 PM   #33
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with most all pumps the motor itself will get pretty warm. So if the entire pump is submerged it will warm the water. If it is plumbed externally I don't think there would be any concerns for heat.
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Old 10-05-2004, 11:07 PM   #34
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out transfers less heat to the water, but is more likely to leak onto your floor...
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Old 10-06-2004, 12:19 AM   #35
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Quote:
Originally Posted by revhtree
Should I use the pump in, or out of the water?

I am going with the mag7, I will also use 45 degree angles. Thanks Alot!
I've heard that some have had leaking issues with mags plumbed externally. There are many pros/cons of plumbing internally or externally.

Internal
Pro - easier to plumb, doent matter if pump leaks, saves space in stand
Cons - adds extra heat, takes up space in sump

External would just be the opposite.

I plumbed mine internally because I dont have space to spare in the stand.
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Old 10-06-2004, 03:58 PM   #36
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from what I've heard, the external mag "leak issue" was on earlier designs had a gasket flaw and that flaw has since been corrected.

I have a Mag5 that is plumbed externally on a closed loop and have never had an issue.
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Old 10-15-2004, 03:56 PM   #37
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Ok got my mag 7 in today with the bulkheads. I am going to lowes to get the other stuff to build the standpipe, and plumb the rest.

I am going to use flex pipe from the bulkheads to the sump, is this ok? So I can move them out of the way if I need to move the sump or clean it. Am I correct with this?

Also reg. cement is what I should use right?

How long to wait for it to dry?

Thanks!
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Old 10-15-2004, 04:03 PM   #38
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I am going to use flex pipe from the bulkheads to the sump, is this ok? So I can move them out of the way if I need to move the sump or clean it. Am I correct with this?

Absolutely. I'm not positive of the flow rate for the flexpipes, but as long as you get a large enough diameter pipe, you shouldn't have any problems. Being able to move/adjust the plumbing I think will be a great thing for you for maintenance etc.

When you say regular cement, you mean PVC cement right? If so yes, I don't think it really matters. The stuff I've used I think is a purplish color. Just ask a Rep at the store to help you pick something that will be "Safe for drinking water" that will give you what you need. Just a reminder... Dry fit your whole setup together once first to be sure there are no unexpected "problems" :wink:
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Old 10-15-2004, 04:35 PM   #39
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Here is the genera idea for my set up, what do you think?
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Old 10-15-2004, 04:38 PM   #40
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Also I dont know what the peice is called that returns the water back into the tak like a PH. The peice I have is adjustable and will be positioned right at the top of the main tank water level. Will I need any kind of holes there?

Thanks.
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