Mag Pumps

[vanceny]

Anyone run these externally? I've always run them in sump but in my next setup I want to run it external for a closed loop. I've heard that it may not be great for the pump since the water helps to keep them cool. If anyone has experience with this some expertise would be great.

Thanks.

 

[drunktank]

what size mag were u planning on running?

i have an actual external pump for sale if ur interested

 

[vanceny]

Its a mag12. I'm not looking for to buy. I've already spent enough. Its what I have. I can still fit it into the sump if I have to.

 

[Tonyscoots84]

just incase of leakage issues i would personally run it in the sump.... even though it may cause heat problems i like to sleep good at night..

 

[PVsPlayhouse]

I ran a mag 18 as a closed loop for a year and it worked fine. So I would say your all good.

 

[Pedro]

The only external mag i run is for my reactor. So far it's help up pretty good. If you use it submerged, don't forget to change the screws out for the nylon ones. If you did not know, those stainless screws will rust out in due time.

 

[vanceny]

i've had it submerged for more than 3 years now, yikes. I better check the screws.

 

[Savager]

I am planning to use my MAG 7 pump externally. I heard it's fine. I am sure MAG12 is same as MAG7.

 

[ming]

Where did you guys get your nylon screws?

 

[fritz]

I setup a closed loop a while ago with a mag 5, it leaked. I took it apart and siliconed it back together. Not a good pump for external use IMO, not the best pump for internal use either (IMO)

 

[vanceny]

I guess I'll just test it first before I finalize my plumbing

 

[fritz]

It depends on which site you check. I think Marinedepot has a disclaimer "These pumps are for INTERNAL use only!" but I think Champion Lighting says "OK for external or internal use"

Not sure what Mag's stance on it is. YOu wouldn't want it to work fine then all of a sudden leak while you're away. I wouldn't use it for a closed loop. If you spend the money for an Eheim pump you'll be happy. It will last you forever and you can use it if you upgrade or change you system a bit. They can be used external or internal and are like tanks. Use your mag like I do, to mix water.

 

[nanoreefer22]

Where did you guys get your nylon screws?

Got mine at lowes, its 56 cents for 2 screws.

 

[sporty]

I run one externally.I tried a quiet one external and it wasnt so quiet as advertised is only quiet when submerged.I like the mags very quite internally in sump or outside (been running outside for about 1 year.
You may get a little leak maybe not just seal it withsome aquarium silicone if necessary and if not happy with the mag.7 let me know if price is right maybe I take it off your hands

 

[Craig]

I went to homedepot to try to buy nylon screws for a mag pump and had no luck. can anyone reccomend a link for a website that sells them?

 

[Tonyscoots84]

Where did you guys get your nylon screws?

The Home Depot has them check were there nuts and bolts are and there should be a metal case with draws thats were the nylon screws are in.. just look and u will find em.........

 

[ming]

I went to Home Depot, both me and the employee that worked there couldn't find any. I'd also be interested if someone could find a place to buy it online.

 

[VJ&POOPS]

where to get nylon screws....I have 9.5 running on my skimmer, submerged....

The screws at lowes and hd aren't those regular screws/generic...don't you want to replace with the exact screws (or do they not exist)....

 

[Astoria]

Old thread about Mag pumps and nylon screws

http://www.manhattanreefs.com/forum/general-discussion/9556-nylon-screws.html?highlight=nylon+screws

Nylon screws online

http://www.usplastic.com/catalog/product.asp?catalog%5Fname=USPlastic&category%5Fname=121&product%5Fid=15584

:beer: