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Old 08-16-2011, 10:55 PM
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Sorry, I posted before I read your link. I was referring to a different study (the one put on using the FlowTracker as the measuring device).

Last edited by DAVE; 08-16-2011 at 11:24 PM.
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Old 08-17-2011, 01:37 AM
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pretty interesting stuff......well not really but good to know....sort of.

Tunze or Vortech....you cant go wrong with these pumps. Myself I prefer the Tunze pumps but that's just me.
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Old 08-17-2011, 04:20 AM
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I don't care about any tests..going to have to try to pry my vortechs out of my hands.
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Old 08-17-2011, 02:01 PM
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No thanks...
got mine full of tunze's
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Old 08-17-2011, 05:00 PM
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I think the obvious answer here is to choose the pumps that are best suited to your tank size & shape, perhaps it's a combination of the two. For eg. my tank is almost cubed at 30x24x24 so the slower broader flow of the vortechs makes sense for me (I've got an MP10 on the back wall and an MP40 on the side wall). I need the flow to fan out quickly after it leaves the pump. In a longer tank maybe you'd want the punch of a Tunze to get water movement further into the tank.
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Old 08-17-2011, 05:07 PM
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Quote:
Originally Posted by jostafew View Post
I think the obvious answer here is to choose the pumps that are best suited to your tank size & shape, perhaps it's a combination of the two. For eg. my tank is almost cubed at 30x24x24 so the slower broader flow of the vortechs makes sense for me (I've got an MP10 on the back wall and an MP40 on the side wall). I need the flow to fan out quickly after it leaves the pump. In a longer tank maybe you'd want the punch of a Tunze to get water movement further into the tank.

Agreed, both pumps provide a benefit in the right systems
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Old 08-17-2011, 05:54 PM
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Quote:
Originally Posted by jostafew View Post
I think the obvious answer here is to choose the pumps that are best suited to your tank size & shape, perhaps it's a combination of the two. For eg. my tank is almost cubed at 30x24x24 so the slower broader flow of the vortechs makes sense for me (I've got an MP10 on the back wall and an MP40 on the side wall). I need the flow to fan out quickly after it leaves the pump. In a longer tank maybe you'd want the punch of a Tunze to get water movement further into the tank.
I dont feel thats the answer at all...lol
as this test was essentially to see which pump was "better" on an equal playing field in a direct peer to peer comparison.

You make a good point, but it's certainly not the obvious answer here...
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Old 08-17-2011, 10:16 PM
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Interesting video!

I think it comes down to that gph is maybe not the best metric to use, it may tell us what's passing through the pump head itself but not what's going on in the tank, which is going to be affected by a myriad of other variables (size, shape, structures, etc.) Maybe velocity is a better metric..
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Old 08-17-2011, 11:52 PM
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Quote:
Originally Posted by gobytron View Post
I dont feel thats the answer at all...lol
as this test was essentially to see which pump was "better" on an equal playing field in a direct peer to peer comparison.

You make a good point, but it's certainly not the obvious answer here...
but it kinda is.......I ve seen what turning on a vortech in my tank does......the first time I fired mine up the over flow that was on the same side of the tank as the vortech started to drain.....as I was underneath the tank tinkering with the gate valve to adjust the water level inside the overflow, my skimmer erupted like Mt Vesuvius ....that to me says that they move a lot of water.........I love my vortechs for that......and the controller is cool.......

But!......you cant point them.......or mount them in certain situations.......

thats why I love my tunzes.......I can mount them in wet situations.....I can point them where I need to..... they still put out good flow.......and they are reliable....


I get tired of these comparison tests between the two pumps......how can you accurately compare the flow output of two completely differently designed pumps?......its like comparing the output of 3000gph through a garden hose (tunze) to 3000gph through a fire hose(vortech)..... and there is the other variables, like Tony mentioned.....
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