Oceanrunner needlewheel vs Sedra needlewheel

R

Rickster88888

New member
Hi all,

Like to seek some advise from fellow DIYers regarding the above pump. Yup this my dirst DIY project... Yeepee:D .

Sedra pumps seems to cost more that the ocean runner ones, so i am wondering if the performance is worth the extra $$$.

Thinking of getting the pumps online from :
http://www.fishsupply.com/cgi-bin/f...=f2&mode=item&path=top/S/SW/SWBZZ/SPKSP-S3500

or

http://www.premiumaquatics.com/Merc...t_Code=TURBO-OR2700&Category_Code=Oceanrunner

Pls do post here if you have other more reliable or cheaper places i can get the pumps.

One last question.... from premiumaquatics they have this oceanrunner T1000 pump. Any difference between this T1000 and the 2700?
Here is the link for info: http://www.premiumaquatics.com/Merc...oduct_Code=AM-70005&Category_Code=Oceanrunner

Thankz for reading

Cheerz folks
Rick
 
2700 pumps

2700 pumps

I own and have been running the Aqua Medic Ocean Runner 2700 on my Turboflotor Multi 1000 protein skimmer and the 2500 as a return pump for some time now and they are great. The pump is clearly well made and very quite you will not be disapointed with 2700 or 2500, same pump expecpt 2700 comes with an implear wheel that works with the protien skimmer mentioned above . If you own a T-1000 protein skimmer then the 2700 is the way to go if not then 2500 is your pump. The T-1000 and the 2700 are also the same exact pump no difference. Most of the time the 2500 is a lot less than the 2700 but it all depends what you want to use the pumps for. Hope this helps.
 
biggt 2k1 said:
Yes their needle wheel is much better. Also they have a good venturi, where the oceanrunner does not come w/ one.
Click to expand...

Does everyone agree with this? I've heard good things about the oceanrunner and it is tons cheaper.
 
I use the OR. They are a fine pump and like you said "tons cheaper. Thte sedra needle wheel is different, I dont know about better. Sedra venturi is just a bad as not having one at all and no my OR did not come with one. You can easily make a awsome venturi for either pumps.

Don
 
nebraskareef said:
Are you smoking Crack? The sedra venturi is about as good as it gets in most peoples experience.
Click to expand...

Let's not get rude here, but Don is right on the aspect that the venturi supplied w/ any needlewheel skimmer will never compete w/ say a mazzei venturi or a beckett for pure air injection, but the ones that come w/ the ER, Deltec, H&S are designed to be used in their applications as a crude venturi that pulls in large air bubbles that are then further whipped into tinier bubbles by the NW. For what they are designed for, they are excellent since you can't restrict the inlet of these mag drive pumps too much.

As for Sedra vs. OR. I've tried both out... actually a friend of mine has a sedra 9000 on his ER CS8-2 and was nice enough to let me experiment w/ it. I popped on the OR 3700 pump and used the exact same volute and venturi that went on the sedra 9000 (surprisingly, the volute and venturi fit almost perfectly :) )

Anyways, the OR 3700 pulled more air and pushed more water and produced just as stinky skimmate and as much skimmate if not slightly more than the sedra 9000, so unless you've actually tested both out in very similar situations, I don't think you can make a blanket statement like "sedra's are much better" unless you've actually compared the two. From my EXPERIENCE, the OR is a better, more efficient pump (65W compared to the sedra 9000s 90W) than the sedra 9000. Both pumps are good, but the OR is better. This is my experience w/ both the 3700 OR pump and sedra 9000, I have no experience w/ the 2700.


For a nice Needlewheel skimmer venturi, check out www.finsreef.com. They are supposedly selling replacement parts for the Eheim NW pumps and it seems like you can get a venturi from them, although I don't know if you need proof that you've actually bought an H&S skimmer.

Peace,
John H.
 
Hey Ed,

I know there are places that will sell you the volute and venturi at a price, but I just can't remember where they are... sorry.

Like I mentioned. I don't know if you have to have proof of purchase of a H&S skimmer to get the volute or venturi for the pump.

Peace,
John H.
 
Thanks, is there a link to making a venturi for one for these needlewheels setups? I have the needlewheel & pump, just need to fit it with a venturi that compliments it.
 
You're right. They are not fine tuned air-sucking machines like some availible venturis. But as far as a venturi that comes with a pump, They do exactly what they are supposed to, and pretty well at that.

I appologize for the rude comment, I don't know what I was thinking, I normally don't act like that.

Thanks for the info on the aquabee pumps, John.

-Daniel
 
Big E - If you look at the EAP euro skimmer thread, there is info on how to make a decent venturi out of a pvc "t" fitting.

Pretty much, you just heat up the T. Smoosh the middle, and add a airhose. You could also add a nipple to the top, the hose is more secure this way.

The "smoosh" part is tricky, but when done right, I can attest to the performance of this venturi.... It does work pretty well.

The kent venturi can be had for about $10 on alot of E-tailer's sites. search for it.
 
nebraskareef said:
Are you smoking Crack? The sedra venturi is about as good as it gets in most peoples experience.
Click to expand...


"In most peoples experience" you get what you get in the box. This in no way makes it "as good as it gets"
In my opinion a good venturi should be able to stall the pump. The one that comes with the sedra doesnt come close to the pumps potential. If you design a venturi that works well enough to stall the pump you can alway valve it down but you wont do that with a stock sedra venturi.

Don
 
when you say "stall out the pump" do you mean it's sucking so much air, that it's no longer even pushing water?

if thats the case I know I've got a couple of different venturis to put on my sedras lol.
 
DonW,

I think there is some gray area there in the distinction of what is a good venturi. As I pointed out before, you must look at what the venturi was designed for and I think that the venturis that are provided w/ the ERs, Deltecs are very good for what they are supposed to do. They draw in a decent amount of air w/ out causing too much constriction on the input of the pump. Now, is it 100% optimized, no one really knows, but putting on a conventional venturi on a weak flow pump is not going to be better IMO and IME.

You don't want to make a venturi that can stall out the pump as that would imply that it is too constrictive and there is a balance b/w airdraw and bubble size. The larger and more air that you draw, the better the needlewheel and impeller have to be to chop up those bubbles into appropriate size. If given the choice, I'd take moderate air draw w/ smaller bubbles over slightly greater air draw w/ larger bubbles.

Am I making sense to anyone?

Peace,
John H.
 
totally off the threads topic now with the venturi conversation, but... Has anyone taken a ball or gate valve and drilled it just behind the gate to make an adjustable ventrui? Then you could adjust the air draw to your hearts content.... Call it 'Emans turbo venturi.' hehehe
 
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