Oceanrunner needlewheel vs Sedra needlewheel
- Thread starter Rickster88888
- Start date
nautilus808
New member
I need a venturi fitting for my OR 3700.
From reading this thread I see I could use the one from a sedra 9000. Does anyone know if that fitting has a 1" thread to connect to the intake of the pump? Anyone have a sedra 9000 with the venturi on the intake? Please let me know if the fitting has a femal thread.
From reading this thread I see I could use the one from a sedra 9000. Does anyone know if that fitting has a 1" thread to connect to the intake of the pump? Anyone have a sedra 9000 with the venturi on the intake? Please let me know if the fitting has a femal thread.
Rip Current
Member
here is a pic of my 6-3 w/ sedra 3500 without a venturi
Rip Current
Member
bond007069
New member
how is that even working?
Rip Current
Member
yes its in the tank! its just a demo. so everyone can see it working without a venturi.
werew
New member
Questions,
I'm building a recirc skimmer with a 6"x20" tall acrylic cylinder for the reaction chamber. The neck riser and inside of collection cup will be a piece of 2.5"x6" tall acrylic tubing. I was wondering what model of GEN X, OceanRunner or Sedra pump would work well with this size of skimmer.
I think i'd want the OR2700, but don't know what models of the other brand pumps that would work the best.
Does putting a "T" on the pumps outlet inside of the skimmer reduce turbulence? It seems like it would deflect the flow a bit and cut the velocity in almost half?
I'm building a recirc skimmer with a 6"x20" tall acrylic cylinder for the reaction chamber. The neck riser and inside of collection cup will be a piece of 2.5"x6" tall acrylic tubing. I was wondering what model of GEN X, OceanRunner or Sedra pump would work well with this size of skimmer.
I think i'd want the OR2700, but don't know what models of the other brand pumps that would work the best.
Does putting a "T" on the pumps outlet inside of the skimmer reduce turbulence? It seems like it would deflect the flow a bit and cut the velocity in almost half?
hahnmeister
In Memoriam
OR2700 sounds good.
Needlewheel pics
Needlewheel pics
FWIW, here are pics of the two needlewheels:
Oceanrunner needlewheel impeller
http://www.petstore.com/ps_ViewItem...otein_Skimmers_Replacement_Parts-vendor-.html
Sedra needlewheel (5000/9000)
http://www.customaquatic.com/customaquatic/subsubcategorypage.asp?subcatindexid=ps-ac-nw
(scroll down, click on "PS-SM3500-RIMP").
I just had a Sedra 5000 with the modified needlewheel, and the venturi) delivered, ambitious to DIY my first skimmer, taming the "needle wheel" fad, which seems to be the one of the driving forces behind the performance and/or popularity of ASM, Euroreef, etc. I had also looked at the Oceanrunner pump, but thought that the Sedra might outperform it. The Oceanrunner is much less, perhaps under $60.
The "venturi" that comes with the Sedra is basic, looks like a simple PVC coupling that is "squeezed" (think 45 deg. angles) in the middle with an opening to attach an airtube. Contrast to a Kent Venturi, which is more streamlined. I think the opinion that the this basic venturi pulls in big bubbles which is then chopped into finer bubbles would be correct. I don't own an Oceanrunner pump, so I don't have a comparison point.
After spending $100 on the Sedra (, I had to re-think of how much I'd actually be saving with a DIY. After some thought, I realized I'd be spending another $35 for 4" or 6" acrylic tubing 2' to 3' in length (added estimated shipping costs on all these), then $30 on acrylic glues (I had run out of Weld-on 16 and Weld-on 3), plus another $25 on various PVC fittings (4" to 2" reducer PVC, PVC flange as a base). I racked up $200 in estimated costs. For $240-$260, an ASM G3 could be had delivered.
Then I stumbled on the Octopus Needlewheel skimmer, their NW-150 is supposedly comparible to the ASM G2, but the Octopus costs ~$135. The NW-150 has a 6" diameter body, and a comparible pump. So far I haven't read any "flaming" opinions about them being a cheap knock off where the pump fails in a matter of months or the acrylic cracks when you pick it up.
I'm returning the Sedra 5000 and considering the Octopus. I origionally was eying the ASM G3, but at half the price of the G3, I'm not sure I can pass up the Octopus NW-150.
Needlewheel pics
FWIW, here are pics of the two needlewheels:
Oceanrunner needlewheel impeller
http://www.petstore.com/ps_ViewItem...otein_Skimmers_Replacement_Parts-vendor-.html
Sedra needlewheel (5000/9000)
http://www.customaquatic.com/customaquatic/subsubcategorypage.asp?subcatindexid=ps-ac-nw
(scroll down, click on "PS-SM3500-RIMP").
I just had a Sedra 5000 with the modified needlewheel, and the venturi) delivered, ambitious to DIY my first skimmer, taming the "needle wheel" fad, which seems to be the one of the driving forces behind the performance and/or popularity of ASM, Euroreef, etc. I had also looked at the Oceanrunner pump, but thought that the Sedra might outperform it. The Oceanrunner is much less, perhaps under $60.
The "venturi" that comes with the Sedra is basic, looks like a simple PVC coupling that is "squeezed" (think 45 deg. angles) in the middle with an opening to attach an airtube. Contrast to a Kent Venturi, which is more streamlined. I think the opinion that the this basic venturi pulls in big bubbles which is then chopped into finer bubbles would be correct. I don't own an Oceanrunner pump, so I don't have a comparison point.
After spending $100 on the Sedra (, I had to re-think of how much I'd actually be saving with a DIY. After some thought, I realized I'd be spending another $35 for 4" or 6" acrylic tubing 2' to 3' in length (added estimated shipping costs on all these), then $30 on acrylic glues (I had run out of Weld-on 16 and Weld-on 3), plus another $25 on various PVC fittings (4" to 2" reducer PVC, PVC flange as a base). I racked up $200 in estimated costs. For $240-$260, an ASM G3 could be had delivered.
Then I stumbled on the Octopus Needlewheel skimmer, their NW-150 is supposedly comparible to the ASM G2, but the Octopus costs ~$135. The NW-150 has a 6" diameter body, and a comparible pump. So far I haven't read any "flaming" opinions about them being a cheap knock off where the pump fails in a matter of months or the acrylic cracks when you pick it up.
I'm returning the Sedra 5000 and considering the Octopus. I origionally was eying the ASM G3, but at half the price of the G3, I'm not sure I can pass up the Octopus NW-150.
Here's an interesting thread where a guy modded the OTP pump (basically the same pump as the OceanRunner) on the Reef Octopus and he's getting numbers comparable to the Deltec and H&S Eheims.
http://reefcentral.com/forums/showthread.php?s=&threadid=914374
http://reefcentral.com/forums/showthread.php?s=&threadid=914374
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