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Unread 10-16-2002, 03:14 PM   #1
jtroutma
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Default New pump time...need advise

Ok, after reading DodgeVipers post about (I think) WW made his TC-4 leak and loose his MOBO, I promptly went home and began flushing my system out. Upon completing the second flush, I noticed my pump was "VERY noisy" and took it apart to clean it. Well, I found a piece of epox that had broken off from some where in the system lodged between a pair of impellers thus causing massive cavitation. OPPS! After I reassembled the pump and tried another flush, it was making more noise than my Suson 108CFM fan (42 dbs) !!! Turned off the pump and tried powering it back on again.......NOTHING!

Disassembled the pump again, and tried another flush....exact same thing down to even not working after a power off.

At this point I got on the phone and called around to local aquariums to get a new pump. So here is what I have available.

Ehiem 1250 @ ~$100 Next day delivery
OR
Sen (Sedra) 3500A ~$65 Next day delivery

Has anyone ever heard about a SEN (Sedra) pumps and how well do they perform??

I checked the stats for that Sedra pump and it has a rating of about 350gal/hr @ 10'+ head. They also tried to sell me the 5000A which does 500gal/hr @15' head. (little too much for my liking)

So...... Comments? Suggestions? I am kinda leaning towards the Sedra because it looks like it has more potential for pressure in the system while still providing volume, however that is an expensive experiment.

So PLEASE let me know what everyone thinks.

Thanks


BTW I did manage to get my Rio back working TEMPORARILY until I can get the new pump.
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Unread 10-16-2002, 03:39 PM   #2
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Here's a link to that Sedra pump:
http://www.clearbead.com/sedra.htm

It's got a 9 foot head, not 10+, unless it's a newer revision (check the box).

It still beats the 1250's 6 foot head, so I'd give it a shot.
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Unread 10-16-2002, 03:59 PM   #3
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I never heard of Sedra.
I can share my experience though. I bought yet-another-1250-look-a-like, since the 1250 was about 100€ and this pump was about 60€.
Result is, this pump runs very hot, quite noisy, and its rotor seems less reliable than the Eheim (already fried one). Not to mention the cavitation problem i've got with my restrictive closed loop.
If i had to do it over i'd get the true 1250.
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Unread 10-16-2002, 04:39 PM   #4
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io gmat, bit surprised about the prices u mention on the 1250

in belgium:
http://www.overclocking.be/?page=sho...7f315334d3a5c7

in the netherlands:
http://www.aquariaveldhuis.nl/query2.php?B=1&C=73
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Unread 10-16-2002, 04:41 PM   #5
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Eh what the H*ll. I guess I will try the Sedra and see if the sales rep. is just taking me for a ride or not. I know that the Ehiem is "the best" but what if everyone is wrong?


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Unread 10-16-2002, 05:01 PM   #6
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If anything, check if it's rated for 24 hour operation, and I don't mean "the guy said so", I mean: written in the docs that are inside the box!
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Unread 10-16-2002, 07:10 PM   #7
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Good point....Kinda forgot to ask that when I was talking to the guy. Oh well, I could always use the thing for producing my own water block round ups
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Unread 10-16-2002, 07:13 PM   #8
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Hahaa, speaking of pumps failing...

I bought a rio about 7-8 months ago, great little pump. User error, it seems, is going to be the blame for my failure. The shaft in rio pumps is a true ceramic material, like a pot or sculpture. Well long story short, the tile floor ate that little shaft about 4 months into my pumps life. Instead of paying $7 plus shipping for a new shaft (this would have been half the value of the pump), I put in another homeade shaft. It was a nice chrome plated axle from some toy car I tore up a long time ago. I was like, sweet! I popped that baby in and fired it up and let it run for the remainder of my pumps life.

The other day, I tore into my system to clean (hehe 4 months worth of grime). When I got into the pump, I saw a disaster. That cheap little axle was nice enough to rust.

So, now I have an Eheim sitting here on the floor waiting until I get my case painted.

As far as quality? My new Eheim is top notch. No wonder they have such a positive reputation. If you have the money, you might as well go for one you know will do the job.
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Unread 10-16-2002, 07:19 PM   #9
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hahahahahahaahaha

Sorry but I just got a kick out of hearing that. Yea I really liked my Rio 1100 but I think it is time to move on (better now than when the pump decides to in the middle of cooling )



SIDE NOTE: Did some beginning OC on the new XP 1800+ (1533Mhz) and right now it handled 152FSB (Multiplier locked) at only 1.775V !!!!!! (probably could do it at stock volatge if I tried)
I am maxed out on the FSB due to my GF3 choking if I go any higher BUT I can hardly wait to unlock this sucker! I think that this baby might be a good canadate for 2.0Ghz+.

OHH Almost forgot the temps Case temp 30C CPU Temp (socket probe; NOT XP core) 29-32C
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Unread 10-16-2002, 08:14 PM   #10
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If I had to recommend a pump, I'd recommend a Mag drive 3 (which is my current pump) Theyre very reliable, quiet, and powerful. The md3 is rated at 350 gal/h and has a head of ~10ft and costs like $45 bucks from petsmart. Best pumps for the money if you ask me.
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Unread 10-16-2002, 10:57 PM   #11
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When u buy the pump you should pay extra attention to quality. Since its going to be on alot you want a pump that will hold a long while. The pump should be silent and not vibrate alot. All eheims i've heard of are of good quality, low noise, low vibrations. Btw, I'm using an eheim.
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Unread 10-17-2002, 02:07 AM   #12
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I have been using the sedra KSP-3500A for the past year now 24/7 with now problems and it's quite too.


BTW : mine was only $50 at the local fish store

EDIT : Sedra's offices are located in Torrance (thats where i live) abd the fish store owner said that they are made just like the ehiems and that they are good with fresh water aswell as salt water
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Unread 10-17-2002, 03:16 AM   #13
gmat
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Quote:
Originally posted by g.l.amour
io gmat, bit surprised about the prices u mention on the 1250
It was at a local pet shop for about 110€.
I can order it, with shipping it will amount to 90€. So i took an average
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Unread 10-17-2002, 04:07 AM   #14
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you r right, this sux0rz on the net i can easily find it for about 70€, at the local petshop it costs 100€, what a ripoff, and that guy was telling me on the phone that i wouldn't be able to find it any cheaper than that. prolly hasn't heard of the internet yet. that time of telling fairy tales to customers is over.
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Unread 10-17-2002, 08:33 AM   #15
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Forget both and get an Iwaki MD20RLT.......final price after discounts is about $122 from these folks.......a few dollars more than the Eheim but well worth it.......better head pressure, more reliable and quieter.......

here
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Unread 10-17-2002, 09:23 AM   #16
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The same link has my Little Giant 2-MDQ-SC, similarly rated to that Iwaki pump, for $78.

If you get lucky, you might find it cheaper, but that probably won't be on the internet.
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Unread 10-17-2002, 10:00 AM   #17
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i wish i could boys, but this isn't the US i'm afraid ;-(
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Unread 10-17-2002, 10:30 AM   #18
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I'm really interested in those Little Giant and Iwaki pumps too... but as i'm in europe... I couldn't find the little giants anywhere in europe, and i mailed iwaki belgium for the price, and the MD30 was 360 euro

Anyone knows where i could get them at a reasonable place? I would prefer to order them from somewhere in europe (power compability stuff). (any other pump suggestions would be nice too... but i'ld like something with the power of a MD30, or better)
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Unread 10-17-2002, 11:10 PM   #19
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Well guys,

I decided to try out the Sedra 3500A and hope for the best. I am kinda concerned about one thing though... could this pump be "too powerful" for my setup? I can just envision hooking everything up, adding the water, turning on the pump, and a few seconds later hoses flying off the water block

I am actaully considering plumbing in a relef valve to where I can regulate the amount of pressure/volume going to my block/radiator. Maybe I can find the "sweet spot" in this setup.
Also with this new pump I am sure that I will need to replace the turbulators in my TC-4 with the springs that DodgeViper has been experimenting with.

The pump will be in tomorrow and my order of Tygon should be in next week. Till then, I hope my Rio holds out


Fat Mike: Thanks for the reasurance I didnt get a completely unknown pump. Is this model rated for 24/7 operation???
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Unread 10-18-2002, 01:57 AM   #20
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yes it is
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Unread 10-18-2002, 02:00 AM   #21
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You know, I thought that I'd NEVER recommend this pump, but this VIA 1300 (370GPH) 6' ,max, is a STEAMSHIP of power, but with that power, you'll pay the price of 60hz NOISE hmm'ing away from it. I don't like that it has a plastice shaft, but it's a solid pump, noisey, powerful and produces some heat, but for $22 can't beat it for the GPH... I'd also recommend a RIO 1100 or 1400 series, as they are cheap in price and pump quiet nicely... I'm TOTALLY against paying Ehiem prices for an oversized/priced pump that delivers inferior numbers for the money... but do what ya pockets can afford... oh yeah, them Maxi-jets are nice too for the $$$... If you want, I'll sell you my Via 1300... PM me and we'll work a nice price for ya, if you like...?
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Unread 10-18-2002, 02:14 AM   #22
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the sedra also uses a ceramic shaft
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Unread 10-18-2002, 08:50 AM   #23
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Quote:
Originally posted by V12|V12
You know, I thought that I'd NEVER recommend this pump, but this VIA 1300 (370GPH) 6' ,max, is a STEAMSHIP of power, but with that power, you'll pay the price of 60hz NOISE hmm'ing away from it. I don't like that it has a plastice shaft, but it's a solid pump, noisey, powerful and produces some heat, but for $22 can't beat it for the GPH... I'd also recommend a RIO 1100 or 1400 series, as they are cheap in price and pump quiet nicely... I'm TOTALLY against paying Ehiem prices for an oversized/priced pump that delivers inferior numbers for the money... but do what ya pockets can afford... oh yeah, them Maxi-jets are nice too for the $$$... If you want, I'll sell you my Via 1300... PM me and we'll work a nice price for ya, if you like...?
Back to the ole' Via, heh?

That 60 Hz noise could be fixed... maybe.

It usually comes from poor coil wrapping. If you crack open the pump, you'll see the motor coils. The 60 Hz buzz comes from the coil wires vibrating, under its own induced EM field.

In order to isolate the noise, you want to dip those coils in laquer, or epoxy, or even wax, if the temps don't get too high. Whatever the solution, it must be able to penetrate deep inside of the coil, so it must be very liquid.

As usual, if you try this, you're on your own.
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Unread 10-18-2002, 02:01 PM   #24
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V12|V12: Actually I am getting the Sedra 3500A to replace my dieing RIO 1100.

I decided to try a bit "beefier" pump after my RIO started making this horrible racket and would not power back on after I would unplug it.

It is an experiement and hopefully will be a very productive one (still need to install my new Dtek HeaterCore + shroud)

I pick up the pump today and am planning on doing a "bathtub" test tonight if time permits
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Unread 10-20-2002, 06:33 PM   #25
fat mike
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Did you get your pump?
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