I just replaced my "700 GPH" Mag 7 with a "635 GPH" Eheim 1260 and...

[sjm817]

I just replaced my "700 GPH" Mag 7 with a "635 GPH" Eheim 1260 and...

Although I like Mag pumps and have always had very good luck with them, my Mag7 was kind of loud for my tastes. I replaced it with an Eheim 1260 since I've seen many posts here on how quiet they are. I was able to connect it up to the same plumbing setup I had on the Mag.

Noise:
Yes, it is much quieter than the Mag

Flow
As above, I connected it to my existing plumbing which is 1" Spaflex vertical which then goes to an OM Squirt terminating on (4) 3/4" Lockline nozzles.

This thing flows a lot of water! Yes, the 635 GPH pump handily outflows the 700 GPH Mag using the same plumbing setup. This was really not great news since I had just the right flow level from the Mag7. Now I'm fighting with the overflow box trying to get it quiet. :mad2:

I may re-plumb it with 3/4" to slow it down some if I can't get it right. I have less pump noise and more water noise....

 

[slovan]

How about adding a ball valve to the output of your pump? Atleast you can fine tune it better than reducing your output to 3/4".

Sounds like you got a nice pump. I'm actually doing something this weekend that is very similar to what you did. I'm replacing my Mag 9.5 with an Eheim 1262. I hope it puts out less heat too. I don't have an issue with heat right now but my tank does run hotter than what I like in the summertime.

 

[sjm817]

I had to double check the box and make sure I didn't get a 1262 by mistake.

The ball valve is an option. I'll be putting in a new sump soon and will be redoing my plumbing setup. I'll decide then. For now, just trying to get it livable.

What size plumbing?

 

[jokeloma]

Dumb question, Do both of these pumps have or not have oil inside them. I will be adding a return pump soon and want to get something I don't have to worry about. Thanks for the reviews on the ehiems.

I don't think pumps like these have oil inside just want to be sure.

 

[sjm817]

No, neither of them do. Not a dumb question either. Its always better to ask!

 

[jokeloma]

Thanks for the info, Do you have any idea which one puts out more heat?

 

[sjm817]

The Mags do. The Eheims are better pumps, quiet, less power and heat, but they do cost more. Both are good reliable pumps.

 

[jokeloma]

Thanks

 

[manderx]

submersible pumps haven't had oil in them for a *long* time. i think the continued talk about oil these days is from when grit wears down the inside of the impeller where it rubs the shaft. those plastic microshavings float to the surface and look and act alot like oil.

 

[Fliger]

I always wondered if Eheim 1260's & 1262's overperform like the other German pumps. Pumps like Red Dragons and even Eheim needlewheel pumps perform much "better" in the US. I had a 1262 and I swear it was WWAAAAY more powerful than a 9.5 Mag. Either the 1262 was performing at the 25% increase that we've seen on German skimmers - or the Mag's ratings are BS.

 

[sjm817]

<a href=showthread.php?s=&postid=6383449#post6383449 target=_blank>Originally posted</a> by Fliger
I always wondered if Eheim 1260's & 1262's overperform like the other German pumps. Pumps like Red Dragons and even Eheim needlewheel pumps perform much "better" in the US. I had a 1262 and I swear it was WWAAAAY more powerful than a 9.5 Mag. Either the 1262 was performing at the 25% increase that we've seen on German skimmers - or the Mag's ratings are BS.

I had a 9.5 not too long ago, but didn't have it on this setup. It wish I had to do a comparison. What I did see on the 9.5 is it flowed a ton as long as large dia plumbing is used. Small dia plumbing or a SCWD really kills it. The Mags don't do well with head loss since they are flow pumps.

Yeah, I was pretty surprised at this. The pump curves show the Mag7 and the 1260 to be pretty equal, but it is not the case. I don't doubt the 1262 would be stronger than a Mag9.5.

 

[MiddletonMark]

<a href=showthread.php?s=&postid=6383449#post6383449 target=_blank>Originally posted</a> by Fliger
Either the 1262 was performing at the 25% increase that we've seen on German skimmers - or the Mag's ratings are BS.

I believe the Mag are flow-tested on 1.5" [double the output size] tube ... and at no head?

Seems like that would suggest it does poorly against any pressure - and why a comparable GPH pump like the Eheim, in real use, would outperform it. [the head-loss calculator suprised me with how Mags flow drops]

Perhaps given the exact specs ... the math works out. But IMO the way they're testing output on these pumps is likely different + reflected in the reality of what you're seeing. And perhaps a bit of what we're seeing in Euro vs. US equipment ratings. I dunno, just throwing it out there.

I don't doubt the Eheim pushes a lot more water, in real use.

 

[sjm817]

I changed out the 1" PVC on the 1260 to 3/4" Vinyl tubing to slow the flow down. No change. Strong as before! I'm used to Mag pumps that will change flow dramatically with a plumbing size change. It didn't even phase the Eheim, which goes to show it is MUCH less affected by head loss than a Mag.

I bet the 1262 would be a good pump to use with a SCWD.

 

[ErikS]

:lol:

Excellent thread...........got a 1262 for Xmas & had the same experience. Before install I was wondering if given the headpressure it would be enough.............more than I expected! Amazing flow.

What I suspect/know -

#1 - Eheim actually rates the pump with the supplied output. This means hook it up and you get the flow stated.

#2 - MAG pumps are rated with at least twice the output size & I suspect the ratings are purely theoretical (as in ideally the pump could move X amount of water but given pesky things like friction & energy loss it never does).

Another benefit for me was heat - the 1262 replaced a PCI GenX-4....tank temp dropped by .75 degrees (yes, there is the wattage difference, but still the PCI is reputed as a low transfer external pump).

 

[bsk997]

Very nice results.

I have a quiet one 3000 for my return right now and it's barely putting out anything so I was looking to replace it.
Right now I have it plumbed to go up about 4ft then it T's off so that the output is in the front of the tank. I'm guessing there's at least 1.5' on each side after the T.

Only choice I have for my setup is submersible pump too.
I was looking at the quiet one 4000, ocean runner or the eheim 1262....
How do you guys think the quiet one 4000 will compare to the 1262 after that much head? Would it be worth it to get the eheim?

 

[ErikS]

I've owned an OR 3500 & as mentioned currently use an 1262 = no contest the 1262 is much stronger (& I like OR pumps).

Mine goes from the pump (1" plumbing), through a "Y" to two 3/4" returns - total vertical is about 5', with about 4' of horizontal run & the output is the typical "3 90* elbow U" - this gives me plenty of flow (enough to give me some serious ripples across the tank - about 24").

 

[sjm817]

<a href=showthread.php?s=&postid=6412785#post6412785 target=_blank>Originally posted</a> by bsk997
Very nice results.

I have a quiet one 3000 for my return right now and it's barely putting out anything so I was looking to replace it.
Right now I have it plumbed to go up about 4ft then it T's off so that the output is in the front of the tank. I'm guessing there's at least 1.5' on each side after the T.

Only choice I have for my setup is submersible pump too.
I was looking at the quiet one 4000, ocean runner or the eheim 1262....
How do you guys think the quiet one 4000 will compare to the 1262 after that much head? Would it be worth it to get the eheim?

I dont have any personal exp with the QO pumps, but I have seen mixed experiences on the forums. From what I can see, there is no big downside to the Eheim. Quiet, great flow, low power, performs well with head loss, lasts forever. Seems like a pretty safe bet.

 

[bsk997]

Your setup is pretty similar to mine Erik.
1262 it is!
Damn the $130 price tag hurts though. lol

Does the Eheim have threaded connection? That's how I have my Quiet One right now and would prefer to just exchange the two. I think it has barb connections?

<a href=showthread.php?s=&postid=6413007#post6413007 target=_blank>Originally posted</a> by ErikS
I've owned an OR 3500 & as mentioned currently use an 1262 = no contest the 1262 is much stronger (& I like OR pumps).

Mine goes from the pump (1" plumbing), through a "Y" to two 3/4" returns - total vertical is about 5', with about 4' of horizontal run & the output is the typical "3 90* elbow U" - this gives me plenty of flow (enough to give me some serious ripples across the tank - about 24").

 

[ErikS]

It has threaded connections.....but.....it's Euro spec as opposed to US NPT. I used a 3/4" x 1" hose barb & quite a bit of teflon tape = works fine w/ no leaks. You'll notice that the stock piece has an o-ring I duplicated this with teflon tape = it works. On the input I used the stock 1" hose barb.

 

[d4a2n0k]

Eheims are very reliable pumps. Its not uncommon for them to last for 10+ years.

Doug at Deltec has mentioned that because our electricity is at 60HZ, the pumps run a little better than Europes 50HZ. I know nothing about electricity so cannot explain why that is or how much of a performance boost we see.

I wonder if the European brand ratings are just LPH converted to GPH without actually testing them on U.S. electricity.