Mag drive pumps

ChefCDJ · 06-03-2002, 04:15 PM

Hello everyone. I'm new to this forum and see you all know your $#!t. So i figured many of you guys would have an answer for me.

I'm looking to get a new water pump and have been looking at the Mag Drive pumps. The 350GPH or the 500GPH in particular. I've noticed not a lot of people are NOT using them. Is that because they are not good to use or that they are a hidden secret that many do not know about?
These pumps run very silent with very few moving parts, totally submersible, and can run continuous. Right now in my eyes, this pump is a great buy. Anybody else have this pump? Any feedback would be appreciated.

JimS · 06-03-2002, 05:49 PM

I have three Danner Mags, the 250,350 and 500. They are virtually silent and do a great job, especially for the price. Many people prefer Eheim, but I have no reason to switch from Danner.

bigben2k · 06-03-2002, 07:25 PM

Actually, most people use a magnetic driven pump, with the same advantages that you listed, but maybe not the brand you have in mind.

Eheims are fairly popular, because they seem to be very reliable (impression? fact? prestige? Don't know...).

There are many other pumps available that will perform just as well (in theory) and sometimes even better.

It just comes down to "how you buy" something. Personally, I want to see the specs (performance chart), so I probably won't get an Eheim.

Fixittt · 06-03-2002, 07:35 PM

hey Chef, welcome. maybe we can get some more of the boys from PC club over here too.

Well, My preference is on small pumps. I dont like a big hunk of plastic taking up realestate. I prefer Rios ( I know I know, all the BS about them. Dont last long, run hot, ect ect.) but I have been running mine 24/7 for almost a year now, with not a single hickup. I have the small Rio in a Res that D-tekcustoms sells. I like the idea of having a whole cooling system in a mid tower. I get great temps, I guess could be a bit lower with a different pump. But Im happy. I got a good overclock with Rock stable preformance.

My thought on a pump is this. will it work? Will it fit? and will it last? Can I afford it? I still have my first Rio power head (big sucker) it now runs my flood coolant system on my desktop CNC mill. And gets turned on and off over 100 times a night. no problem.

So... Jump on the band wagon people if U must, But I still have a little money left in my wallet.

I know this didnt help Chef. But hey, I like to see my self type.

ChefCDJ · 06-03-2002, 07:49 PM

Thanx all..I think I will go with the mag drive 350. I can tell this is going to be a great forum to join. May there be many great posts to come.

UpAllNight · 06-03-2002, 07:54 PM

Quote:

Thanx all..I think I will go with the mag drive 350. I can tell this is going to be a great forum to join. May there be many great posts to come

WARNING PROCOOLING FORUMS WILL COST U MONEY

i didnt even think about water cooling until i found this place and then with in a week i already spent 200 bucks and havent stoped since....

bigben2k · 06-03-2002, 08:10 PM

Quote:

Originally posted by UpAllNight

i didnt even think about water cooling until i found this place and then with in a week i already spent 200 bucks and havent stoped since....

(I just keep telling myself: Ben you're in the wrong line of business...)

bigben2k · 06-03-2002, 08:14 PM

Quote:

Originally posted by ChefCDJ
Thanx all..I think I will go with the mag drive 350. I can tell this is going to be a great forum to join. May there be many great posts to come.

...and that's a most excellent choice (in more ways than one!).

For those who still slam the Rio, I'll tell you this: if you use a pump in a rig where there's a lot of restrictions and you're pushing your pump to do something that it wasn't meant to do, of course it will fail!

Keep your rig tight and straight. Everything will be fine.

ambient · 06-03-2002, 09:18 PM

mannnn..... rios are not that bad. I have a salt water tank with 4 rios in it, they've been runnin non stop for about 3 years now. Let me tell ya they have a lot of crap runnin through them all the time. Not only that but my brother works for a fish store, out of all the pumps they sell they sell rios the most. I asked if they get a lot returned, they don't.

gmat · 06-04-2002, 05:56 AM

Quote:

Originally posted by bigben2k

Eheims are fairly popular, because they seem to be very reliable (impression? fact? prestige? Don't know...).

Both

Facts: just every aquarium owner knows about Eheim. Yes they're overpriced but they know they're the best in the business.
Prestige: the price reflects it..

Reliability - unmatched
Performance - one of the best. Dont look at GPH (there was a thread in this forum i think about this) the real performance of a pump is under load. Eheims manage high loads with no problem where other pumps (like Danners) will crumble and produce no flow. Again this is based on the experience of several users who compared an Eheim vs another pump under the same conditions.

At first i was reluctant to buying one but i must admit they rock.

bigben2k · 06-04-2002, 07:13 AM

Quote:

Originally posted by gmat

Both
Facts: just every aquarium owner knows about Eheim. Yes they're overpriced but they know they're the best in the business.
Prestige: the price reflects it..
Reliability - unmatched
Performance - one of the best. Dont look at GPH (there was a thread in this forum i think about this) the real performance of a pump is under load. Eheims manage high loads with no problem where other pumps (like Danners) will crumble and produce no flow. Again this is based on the experience of several users who compared an Eheim vs another pump under the same conditions.

At first i was reluctant to buying one but i must admit they rock.

Agreed. I'd just like to see a performance chart for those Eheims, and since Eheim doesn't publish one, I'm not going with it.

For those interested, the 1250 is rated at 317 GPH, at 0 head. Actual flow rate drops to somewhere around 150 GPH in many rigs reported throughout this forum. This is normal, but it does indicate :
1- There's a big pressure drop through a rig (so keep it tight and straight)
and
2- A pump will not operate at it's rated GPH, because that's usually a 0 drop measurement. Each pump will perform differently under pressure, because of design.

SCompRacer · 06-04-2002, 07:20 AM

My actual flow for a Eheim 1250, all 1/2" system, Maze2, 6" x 6" core, (no elbows or tees restricting flow) in a full tower with six feet of hose was 94GPH. With 3/8" hose, 65GPH.

gmat · 06-04-2002, 09:19 AM

Quote:

Originally posted by bigben2k

Agreed. I'd just like to see a performance chart for those Eheims, and since Eheim doesn't publish one, I'm not going with it.

There *are* charts. They're not on Eheim's site though

I think i found em on overclockers.com . You may need to dig that up, i'm at work here.
Note: yeah ALL pumps have a huge flow drop under load. The amount of this drop is what makes the price difference between apparently otherwise similar models...

Cyco-Dude · 06-04-2002, 10:21 AM

ive got the Danner 350GPH mag-drive pump. bought it from Petsmart's website. it runs quiet, costs a lot less than an ehiem, its also smaller. you'll need to seal the housing with some sort of silicone sealant (otherwise it'll slowly leak).
oh, its rated @ 350GHP @ 1' head; 375GPH @ 0' head.

ive heard about ppl's impellers rattling (fixable) and craking the housing. :shrug:

ambient · 06-04-2002, 12:21 PM

Quote:

Note: yeah ALL pumps have a huge flow drop under load. The amount of this drop is what makes the price difference between apparently otherwise similar models...

what does "under load" mean, when the pump is on? When the pump is on and hooked up to tubing?

Quote:

Facts: just every aquarium owner knows about Eheim. Yes they're overpriced but they know they're the best in the business

Eheim's are regarded as being very good, but as for the best in the business probably not. That would, arguably be, little giant or dolphin, but they're mad expensive.

see this for dolphin see this for little giant

bigben2k · 06-04-2002, 12:39 PM

Quote:

Originally posted by ambient

what does "under load" mean, when the pump is on? When the pump is on and hooked up to tubing?

When the pump is on and hooked up to tubing.

ambient · 06-04-2002, 01:50 PM

Hey ben, I never noticed you have the TC-4. Have you tried it without the pelts? If so what temps did you get. I haven't seen anyone using that block yet. I'm curious how it performs without pelts.

bigben2k · 06-04-2002, 02:06 PM

Quote:

Originally posted by ambient
Hey ben, I never noticed you have the TC-4. Have you tried it without the pelts? If so what temps did you get. I haven't seen anyone using that block yet. I'm curious how it performs without pelts.

I haven't built it yet, I'm in this constant upgrade loop (must.... break.... free....!)

I wish Danny hadn't told me about it...

gmat · 06-04-2002, 03:37 PM

Quote:

Originally posted by ambient

Eheim's are regarded as being very good, but as for the best in the business probably not. That would, arguably be, little giant or dolphin, but they're mad expensive.

Yeah in Europe we got Guinard pumps and Germans have some other brands as well. But the least of these pumps cost about 10x the price of a Eheim... Not to mention the bulky size. I was just generally speaking about pumps that can fit in a watercooled mid-tower without sucking your bank account dry...

[edit] Ak i just remembered. If you go the expensive & bulky way so forget about your teeny feeble so-called pumps. Here are what true warriors use:
CTi Cryogenics
Yep they mostly make vacuum pumps. But take a look at those He compressors used to freeze em to 2K (thats about -271°C)... Superconductivity anyone ? (ok ok you have to pay about $10000 for the compressor and add to that He supply lines)

06-03-2002, 04:15 PM	#1
ChefCDJ Cooling Neophyte Join Date: Jun 2002 Location: Las Vegas, Nevada Posts: 3	Mag drive pumps Hello everyone. I'm new to this forum and see you all know your $#!t. So i figured many of you guys would have an answer for me. I'm looking to get a new water pump and have been looking at the Mag Drive pumps. The 350GPH or the 500GPH in particular. I've noticed not a lot of people are NOT using them. Is that because they are not good to use or that they are a hidden secret that many do not know about? These pumps run very silent with very few moving parts, totally submersible, and can run continuous. Right now in my eyes, this pump is a great buy. Anybody else have this pump? Any feedback would be appreciated.

06-03-2002, 07:25 PM	#3
bigben2k Responsible for 2% of all the posts here. Join Date: May 2002 Location: Texas, U.S.A. Posts: 8,302	Actually, most people use a magnetic driven pump, with the same advantages that you listed, but maybe not the brand you have in mind. Eheims are fairly popular, because they seem to be very reliable (impression? fact? prestige? Don't know...). There are many other pumps available that will perform just as well (in theory) and sometimes even better. It just comes down to "how you buy" something. Personally, I want to see the specs (performance chart), so I probably won't get an Eheim. __________________ WBTA (Water Block Testing Alliance) Nordic Hardware WC 101

06-03-2002, 07:35 PM	#4
Fixittt CNC Beyatch Join Date: Aug 2001 Location: Tulsa Spell it backwards Posts: 721	hey Chef, welcome. maybe we can get some more of the boys from PC club over here too. Well, My preference is on small pumps. I dont like a big hunk of plastic taking up realestate. I prefer Rios ( I know I know, all the BS about them. Dont last long, run hot, ect ect.) but I have been running mine 24/7 for almost a year now, with not a single hickup. I have the small Rio in a Res that D-tekcustoms sells. I like the idea of having a whole cooling system in a mid tower. I get great temps, I guess could be a bit lower with a different pump. But Im happy. I got a good overclock with Rock stable preformance. My thought on a pump is this. will it work? Will it fit? and will it last? Can I afford it? I still have my first Rio power head (big sucker) it now runs my flood coolant system on my desktop CNC mill. And gets turned on and off over 100 times a night. no problem. So... Jump on the band wagon people if U must, But I still have a little money left in my wallet. I know this didnt help Chef. But hey, I like to see my self type. __________________ Creator of the Spir@l Block Longest post ever http://forums.procooling.com/vbb/showthread.php?s=&postid=43808#post43808

06-03-2002, 09:18 PM	#9
ambient Cooling Savant Join Date: Jan 2002 Location: Planet Earth Posts: 312	mannnn..... rios are not that bad. I have a salt water tank with 4 rios in it, they've been runnin non stop for about 3 years now. Let me tell ya they have a lot of crap runnin through them all the time. Not only that but my brother works for a fish store, out of all the pumps they sell they sell rios the most. I asked if they get a lot returned, they don't. __________________ water cooled 1.4 tbird @ 1580 143x11 vcore 1.88 vio 3.55

06-04-2002, 01:50 PM	#17
ambient Cooling Savant Join Date: Jan 2002 Location: Planet Earth Posts: 312	Hey ben, I never noticed you have the TC-4. Have you tried it without the pelts? If so what temps did you get. I haven't seen anyone using that block yet. I'm curious how it performs without pelts. __________________ water cooled 1.4 tbird @ 1580 143x11 vcore 1.88 vio 3.55

06-03-2002, 05:49 PM	#2
JimS Cooling Savant Join Date: Jun 2001 Location: Connecticut Posts: 140	I have three Danner Mags, the 250,350 and 500. They are virtually silent and do a great job, especially for the price. Many people prefer Eheim, but I have no reason to switch from Danner.

06-03-2002, 07:49 PM	#5
ChefCDJ Cooling Neophyte Join Date: Jun 2002 Location: Las Vegas, Nevada Posts: 3	Thanx all..I think I will go with the mag drive 350. I can tell this is going to be a great forum to join. May there be many great posts to come.

06-04-2002, 07:20 AM	#12
SCompRacer Cooling Neophyte Join Date: Apr 2002 Location: Illinois Posts: 94	My actual flow for a Eheim 1250, all 1/2" system, Maze2, 6" x 6" core, (no elbows or tees restricting flow) in a full tower with six feet of hose was 94GPH. With 3/8" hose, 65GPH.

06-04-2002, 10:21 AM	#14
Cyco-Dude Cooling Savant Join Date: Feb 2002 Location: Dayton, Ohio Posts: 836	ive got the Danner 350GPH mag-drive pump. bought it from Petsmart's website. it runs quiet, costs a lot less than an ehiem, its also smaller. you'll need to seal the housing with some sort of silicone sealant (otherwise it'll slowly leak). oh, its rated @ 350GHP @ 1' head; 375GPH @ 0' head. ive heard about ppl's impellers rattling (fixable) and craking the housing. :shrug:

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