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PostPosted: Apr 14th, '07, 14:05 
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I came across this device called the Flout Floating Outlet.
It appears to offer the advantage of allowing low water rising rates inherent in aquaponics to trigger a large rush of water output. I am intruiged....
any thoughts on DIY for our scenario, assuming a header tank is used? (Like barrelponics).

http://www.rissyplastics.com/flout/about.html

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PostPosted: Apr 14th, '07, 16:32 
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Very interesting. As you have indicated, would probably be best for use in a headertank, not a grow bed, due to the horizontal design.


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PostPosted: Apr 14th, '07, 16:44 
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I have often contemplated incorporating a slightly deeper, but narrow tank right next to the grow bed, and putting an auto siphon in there. Water would rise in this tank at the same level as the growbed. You could then drain the beds and drain deeper to allow for greater time in between flooding. This flout could fit in there. I am still interested in using a header tank, as that is what I currently use.

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PostPosted: Apr 14th, '07, 17:19 
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Funny you should say that Hayden - taht is the reason why when writing my post I used the word 'best' when originally I was going to say something else. I think you are on the money, but it kinda depends on the suitability of the container being used adn the added difficulty of adding that extra bit.


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PostPosted: Apr 15th, '07, 02:22 
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I can't figure out how the alternating bit works. It looks like a weight that flops from side to side -- I just can't figure out how it would cycle. You guys have more info? It seems pretty simple -- though it does have some moving parts. I wonder what the failure rate of that flexible coupling would be...

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PostPosted: Apr 15th, '07, 02:55 
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The patent was at the bottom of the web page but it didn't explain the alternating system -- but this page does http://www.rissyplastics.com/products/alternator.htm

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PostPosted: Apr 15th, '07, 10:40 
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It sounds like the coupling is quite durable. They show a video on the site you posted of one that has been operating for 13 years.
I am going to experiment to see what shapes of float work.

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PostPosted: Apr 17th, '07, 09:45 
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Brilliant! :sunny:

The first version I built works a treat!
Made from a ~5" tall cylindrical container. 3/4" pvc inserted into bottom through a cut hole, so it almost reaches the top of the container.
It must be flat against the side. I hot glued it into place.
I used white corrugated bilge hose, as it was quite easily bendable.
A weight must be attached to the top of the container to pull it under after it fills.
I think a soft rubber hose would work better though, I may call around some hose specialty stores tomorrow, and build a solid version without using tape;)
It worked all day today.
I took a video of it working too, but have nowhere to upload it...
Pictures!:


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PostPosted: Apr 17th, '07, 15:33 
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That's great raimo, works just like the real thing, well done :wink:

My concern is the space required for operation, very simple in operation tho which makes it near-on bullet proof so don't stop experimenting.

Maybe I am looking at it differently than what you have in mind

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PostPosted: Apr 17th, '07, 17:22 
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I've been scratching my head over how these work.

I think I've got it. The float raises with the water level until it gets to the limit of it's flexibility (or does the angle of the float cause it to "capsize") then the float fills and it sinks emptying the tank.

Is that right?

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PostPosted: Apr 17th, '07, 17:44 
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Yep - rises/floats up to the vertical and water can't get into the flexible drain pipe until the black floaty thing takes on water, becomes full of water and sinks allowing water to flow out.

When the water has drained out of the float (tank empty), the float then gains buoyancy and is ready to float up with the water as it rises again....and so it goes

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PostPosted: Apr 17th, '07, 17:48 
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SC, if you go to the link Raimo 1st posted:
www.rissyplastics.com/flout/about.html

there is a button underneath the pic says "View dosing cycle", this will give a frame by frame example of a full cycle

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PostPosted: Apr 17th, '07, 22:05 
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Excellent Hayden, this would be able to work in much slower flows wouldn't it..? Where syphons can tend to suffer when the flow is too low, these would be ok at almost any flow..

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PostPosted: Apr 17th, '07, 22:11 
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No probs with a slow inflow at all - should handle any rate. Need only ensure that inflow is not greater than outflow.


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PostPosted: Apr 18th, '07, 09:02 
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That is correct. A very slow flow can be used.
I have 2 outlets from my header tank, one to the growbeds and one to a duckweed tank. I use a valve on the outlet to the duckweed tank to control the fill rate of the header tank, and a valve on the outlet of the beds to control the level at which it floods to. Very simple, and fool proof compared to the barrelponics floodvalve(not that it is not a cool design, but it is prone to blockages due to the small siphon activator tube)

I have also found that by slightly flattening the section of corrugated hose where the bend occurs allows it to flex easier and it goes through the full range of motion. Good enough until I can find a more suitable hose.
Going 2 days without a hitch.
i see now why the unit was made with a flat box, as it allows for a greater drainage of the chamber.
With all that said......I think I am in Love ;)

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