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PostPosted: Jun 9th, '07, 06:20 
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I've looked at a lot of hillsides recently and envisioned a terraced AP setup with a poly covering over it and a pool at the bottom. (south facing would be the best)




That would utilize land that is otherwise not agriculturally used -- certainly for greenhouse type operations. With the right pump, it could be incredibly efficient -- And whoever picked the vegetables would get very strong legs....

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PostPosted: Jun 9th, '07, 07:06 
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Dave Donley wrote:
I'm also not using a venturi drain per se because the outlet is on the side of the fish tank rather than the bottom (just like EB's pictures).


How do you get the solids off the bottom of the fish tank?

Dave Donley wrote:
The reason it is this way is to use the high flow from the auto-siphoning grow beds to aerate the water


I thought about this also, as EB stated however, it takes a greater flow capacity than becomes feasable with a large system.

Dave Donley wrote:
I couldn't or didn't want to raise the fish tank up high enough to drain into the grow beds then the sump. The downside is that the solids go through the sump before hitting the grow beds, but so far that hasn't been as big an issue as I had imagined.


I'm still unsure how you are getting the solids out of the fish tank?

Dave Donley wrote:
I think the flow out of the fish tank to grow beds would be enough to start siphons - if the flow up to the beds is enough to start siphons in my system a rearranged version would be the same flow all around and lower beds would start just as well, I would think. If I had more vertical space I would add beds after the fish tank and before the sump in my system, or maybe try out a tidal system like J7 sketched out.


That's what I thought, but where I have a problem understanding the autsiphon, and likewise the point at which I abandoned my feeble attempt, was: what flow rate is required to kick start the siphon? Is it higher or lower than the siphons' outflow?

Sorry Joel this should be in another thread. Dave PM response please....help me out.


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PostPosted: Jun 9th, '07, 09:07 
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Solids are coming up off the bottom of my system fairly simply.. See pics below

So far as a name for this type of system.

It's a chift pist system...

Constant height in fish tank, pump in sump tank.. Comonly known as a a pist system.. :lol:


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File comment: The end of the pipe sits on the bottom of the tank, with large crenellations.
IMG_2258 (Medium).jpg
IMG_2258 (Medium).jpg [ 83.5 KiB | Viewed 5511 times ]
File comment: T on the top means that there is a backup overflow if the bottom inlet should ever get blocked.
IMG_2257 (Medium).jpg
IMG_2257 (Medium).jpg [ 73.48 KiB | Viewed 5526 times ]

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PostPosted: Jun 9th, '07, 09:10 
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C'mon mate, wheres the pride in pictures? had to tilt my head 90deg! ;)

LOve the acronyms ;)

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PostPosted: Jun 9th, '07, 09:27 
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It's a chift pist system...


Need to get Jaymie to add that one to the AP thesaurus

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PostPosted: Jun 12th, '07, 01:05 
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haha.....Chift Pist.... what the hey.


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PostPosted: Jun 24th, '07, 17:04 
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joel is there an issue with the smaller pump not pushing solids in this system?

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PostPosted: Jun 24th, '07, 20:58 
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There are no real solids in the drain tank where the pump is Beeso, the solids are in the main tank..

The low flow of the smaller pump certainly doesn't help move solids of any sort, even when the water is pumping back into the fish tank, it doesn't move the water around much..

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PostPosted: Jun 25th, '07, 05:46 
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earthbound wrote:
Solids are coming up off the bottom of my system fairly simply.. See pics below

So far as a name for this type of system.

It's a chift pist system...

Constant height in fish tank, pump in sump tank.. Comonly known as a a pist system.. :lol:

I use a drain like that in my duckweed tank


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PostPosted: Jun 25th, '07, 05:50 
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F&F, my 5 year old son Garion (our expert on all AP) says, "that is a lovely system. I like it a lot"

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PostPosted: Jun 25th, '07, 06:10 
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Jaymie wrote:
F&F, my 5 year old son Garion (our expert on all AP) says, "that is a lovely system. I like it a lot"

that might look ok you should see the rest of the yard bloody mess even i say that BIG garage sale coming up in better weather

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PostPosted: Oct 22nd, '07, 20:59 
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Hi Joel,

This looks like a cheap and easy system for a first up Ap'er.

The fish tank is 1000l, what volume is the growbed and sump? Are the ratios about right?

Can you tell me more about the pump?

The system has been running for 6 months now, how is the progress, does the water get enough aeration?

What changes would you make if you started again?

Must be about time for an updated growth picture ;-)

Ta
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 Post subject: Re: Joel's second system
PostPosted: Nov 6th, '07, 19:49 
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Hello?

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PostPosted: Nov 6th, '07, 19:51 
Trentski, Joels been awol for a while due to phoneline, telstra issues....

I'm sure he's not far away and will catch up shortly.


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PostPosted: Nov 7th, '07, 08:47 
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Hey Trensky,

Yeah, this system was ok, I've decomissioned it, due to having just too many systems to look after at the moment.. The drain tank was 500L, the growbed, I don't know how big it is, probably about 200L or less.

Are the ratios about right? Well that all depends on how many fish you put in there. :) They can always be right.

Does the water get enough aeration? Not really, I had an air pump going in there at the same time...

Changes? Larger growbed and larger drain tank... :D

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