Pendutor / Eductor

Okay, I don't get it.. is is a for return lines that spread the water more conical in dispersement? What exactly does it do? The link was kinda vague.. heard about them, just never knew what the heck it did... thanks... :confused:
 
They appear to use the stream from the pump to pull in additional water from the sides (I think).

I appears 5x increase but I know nothing about them.........seems to go against the laws of physics a little. I would think if your pump is pushing 500 g/hr, then this is going to be the max. no matter how you spell it..........or perhaps (more likely) as with setting up the link, I just do not understand it clearly.
 
<a href=showthread.php?s=&postid=8238246#post8238246 target=_blank>Originally posted</a> by 1package
They appear to use the stream from the pump to pull in additional water from the sides (I think).
That's sorta how they work.
I appears 5x increase but I know nothing about them.........seems to go against the laws of physics a little. I would think if your pump is pushing 500 g/hr, then this is going to be the max. no matter how you spell it..........or perhaps (more likely) as with setting up the link, I just do not understand it clearly.
This is how I've seen it explained. It's kinda like a water hose. If you partially cover the end with your thumb you increase the pressure of the water flowing out. Even though the gph stay the same.

I've got a dyi eductor on the closed loop and it does increase the flow a lot. To get the full 5x increase they recommend using a pressure rated pump which I'm not.
 
I have one that I have experimented with and yes it greatly increases the flow but I to have never tried it on a pressure rated pump. I was toying with the idea of using one in my next system but I'm not sure if I will need it with a 6100 and a wavebox. I may use it for my storm surge device though. I plan on using a powerful pump that will only come on from time to time(days apart), that's primary function will be to cause massive water flow across the bottom which should in theory kick up all the detritus and throw it into filtration if it works.
 
I thought it used the pressure of the stream to drag in additional water from the sides, designed for mixing applications.

I do not know, I was just wondering if anyone was using.
 
"I may use it for my storm surge device though. I plan on using a powerful pump that will only come on from time to time(days apart), that's primary function will be to cause massive water flow across the bottom which should in theory kick up all the detritus"............ (in my tank).............followed by a day of picking up and repositioning all of the small rocks and corals.
 
HOW EDUCTORS WORK:
As the solution is pumped through an eductor's orifice, a low pressure area is created that acts to pull solution from behind the bell shape of the eductor and direct the solution out of the bell end. For each gallon of solution that is pumped through the eductor, three or four gallons of additional solution is circulated within the tank. As one of the most cost-efficient and effective ways for manufacturers to get the best performance from their re-circulating process tanks, it is easy to see why tank mixing eductors are the design of choice for all major manufacturers. From here

Direct link to saltwater application.
 
They cost a small fortune guys and the controller is not available yet so no waves till it comes out sometime next year. Also note this is on a small tank I would imagine you would need at lest 4 or more on a larger tank to duplicate that kind of action. By the time you pay for 4 or more of these plus the control and battery backup, you could achieve similar flow and results with many conventional pumps and a TUNZE system with waveboxs.
 
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