hope if you own Tunze's you dont like flow!
- Thread starter mdrumm
- Start date
does anyone own tunze;'s that were not happy with them before this?
i find it kind odd that the koralias are right on and everyone else is different ...i dunno
also why wouldn't vortech advertise the actual flow that this test claims ...did they not test theirs either and just guess
guess there should be a standardized test for flow when advertising ...reminds me of how speaker manufacturers advertise the max watts but they often vary greatly from the stated wattage in reality
i find it kind odd that the koralias are right on and everyone else is different ...i dunno
also why wouldn't vortech advertise the actual flow that this test claims ...did they not test theirs either and just guess
guess there should be a standardized test for flow when advertising ...reminds me of how speaker manufacturers advertise the max watts but they often vary greatly from the stated wattage in reality
1
Hmmmmm...this is a tough one. I was sold on what I was told was a great product but yet it doesn't perform like they said. So imo I paid way too much for an average product. On the other side of the equation, what I have works pretty dang good and I am and have always been happy with it. However with future purchases if i were to by another tunze the price better come way down or the decision is pretty easy to go in another direction. Would be a good time to own ecotech stock. I hate you tunze for lieing to me, now I am going to lose sleep over this.
I believe Vortech did test theirs and they've always known that their claims are on the low end. I think they used lower figures
to avoid overstating results that people may not be able to duplicate. I think the thickness of the tank wall and the smoothness of the wall
has a lot to do with how much flow can be generated. The further apart the magnets are from each other, the less torque is developed,
therefore the propellor may not spin as fast.
These are just guesses. That said, I love my Vortechs. Do I wish they were less expensive? Yes. Would I still buy more of them if I could?
yep, I have four of them now.
to avoid overstating results that people may not be able to duplicate. I think the thickness of the tank wall and the smoothness of the wall
has a lot to do with how much flow can be generated. The further apart the magnets are from each other, the less torque is developed,
therefore the propellor may not spin as fast.
These are just guesses. That said, I love my Vortechs. Do I wish they were less expensive? Yes. Would I still buy more of them if I could?
yep, I have four of them now.
Exactly! Not to mention that even if you had NASA R&D lab at your disposal to do your testing there is going to be an untold number of variables that people are going to introduce in the market, and you simply can account for all of them. Assuming Ecotech really did thorough testing and had some solid base line numbers I think they were smart for understating their flow rating given the fact that they can be dialed back.
O man, Ecotech is capitalizing on this! Just got this via email;
EcoTech Marine Pumps Deliver More Flow than Promised
New study proves that the flow from the VorTech family of pumps exceeds even the company's own advertised claims
EcoTech Marine, the company that revolutionized the reef aquarium propeller pump, is pleased to announce the results of a scientific study on flow rates published in this month's edition of Advanced Aquarist.
Dr. Sanjay Joshi, Ph.D., professor of Industrial and Manufacturing at the Pennsylvania State University, conducted the study. He used a proven method to most accurately determine the output flows of several leading aquarium propeller pumps. The study scientifically shows the entire VorTech line delivers superior flow rates far in excess of what EcoTech Marine itself was claiming in its own marketing and advertising.
The MP40, the VorTech that started it all, delivers 18.2% more than its advertised claim of 3200 GPH—netting 3781 GPH in the study.
The MP10, ideally situated for tanks smaller than 50 gallons, has an advertised flow rate of 1575 gallons per hour (GPH). The study showed a GPH of 2460—a 56.2% increase over the advertised amount.
The MP60, ideally suited for larger tanks, has an advertised rate of 7500 GPH. It delivered 8509 GPH in the controlled study—an increase of 13.5%.
"At EcoTech Marine, we pride ourselves on delivering technologically superior products with exceptional value," said Tim Marks, president of EcoTech Marine. "Using the most accurate equipment and technology possible to measure water flow, Dr. Joshi looked at a wide range of pumps from a variety of manufacturers. The fact the VorTech delivered superior results is a testament to our unrelenting commitment to engineering and manufacturing the most advanced products in the industry."
In an effort to standardize the flow measurements and claims for powerhead manufacturers, EcoTech enlisted the help of Dr. Sanjay Joshi to design a study utilizing the latest in analytical techniques available. To perform the study, Dr. Joshi used a Sontek 10-MHz Acoustic Doppler Velocimeter in a 350-gallon aquarium. The velocity profile of the pump exit flow was measured at a distance of one diameter downstream from the output of the pumps, and this measurement was used to determine the volume flow rate output.
"We're very pleased with the results of the study," said Marks. "The loyalty of EcoTech Marine customers has been rewarded. Reef aquarists purchase a pump for an expected performance, the most important of which is flow rate. We'd rather under-promise and over-deliver any day of the week to earn our customer’s loyalty."
Click here to read the full article and see how VorTech stacked up to the competition.
EcoTech Marine Pumps Deliver More Flow than Promised
New study proves that the flow from the VorTech family of pumps exceeds even the company's own advertised claims
EcoTech Marine, the company that revolutionized the reef aquarium propeller pump, is pleased to announce the results of a scientific study on flow rates published in this month's edition of Advanced Aquarist.
Dr. Sanjay Joshi, Ph.D., professor of Industrial and Manufacturing at the Pennsylvania State University, conducted the study. He used a proven method to most accurately determine the output flows of several leading aquarium propeller pumps. The study scientifically shows the entire VorTech line delivers superior flow rates far in excess of what EcoTech Marine itself was claiming in its own marketing and advertising.
The MP40, the VorTech that started it all, delivers 18.2% more than its advertised claim of 3200 GPH—netting 3781 GPH in the study.
The MP10, ideally situated for tanks smaller than 50 gallons, has an advertised flow rate of 1575 gallons per hour (GPH). The study showed a GPH of 2460—a 56.2% increase over the advertised amount.
The MP60, ideally suited for larger tanks, has an advertised rate of 7500 GPH. It delivered 8509 GPH in the controlled study—an increase of 13.5%.
"At EcoTech Marine, we pride ourselves on delivering technologically superior products with exceptional value," said Tim Marks, president of EcoTech Marine. "Using the most accurate equipment and technology possible to measure water flow, Dr. Joshi looked at a wide range of pumps from a variety of manufacturers. The fact the VorTech delivered superior results is a testament to our unrelenting commitment to engineering and manufacturing the most advanced products in the industry."
In an effort to standardize the flow measurements and claims for powerhead manufacturers, EcoTech enlisted the help of Dr. Sanjay Joshi to design a study utilizing the latest in analytical techniques available. To perform the study, Dr. Joshi used a Sontek 10-MHz Acoustic Doppler Velocimeter in a 350-gallon aquarium. The velocity profile of the pump exit flow was measured at a distance of one diameter downstream from the output of the pumps, and this measurement was used to determine the volume flow rate output.
"We're very pleased with the results of the study," said Marks. "The loyalty of EcoTech Marine customers has been rewarded. Reef aquarists purchase a pump for an expected performance, the most important of which is flow rate. We'd rather under-promise and over-deliver any day of the week to earn our customer’s loyalty."
Click here to read the full article and see how VorTech stacked up to the competition.
