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PostPosted: Jun 23rd, '15, 14:24 
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Hey what do you think about the vortex aerator? is it a waste of time? one guy says it affects his TSS removal how could that be possible?


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PostPosted: Jun 23rd, '15, 14:45 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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Please I again encourage you to get some text books.

Last time we discussed it you said you couldn't afford them but if you are going to design systems your self you need to know this stuff backwards and have the books on hand for reference.

It also means that we can discuss stuff at a higher level and move the ball forward.

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PostPosted: Jun 25th, '15, 16:13 
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i am in total agreeance with you sturt in fact i that's what i will get my self for christmas. 2 good text books, but for now, but don't let that stop the discussion. i saw a system on youtube that doesn't use mechanical filtration

https://www.youtube.com/watch?v=FrAycoWUmVM

i am thinking its a plate filter if you look to the left in the vid.
how would filling the outer area with 1in PVC pipes running straight up would that improve solid capture?


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PostPosted: Jun 25th, '15, 16:26 
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Animal welfare people are not going to be happy with a system like that.

150kg/m3 :shock:

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PostPosted: Jun 25th, '15, 16:27 
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"Stuff training" snigger :roll:

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PostPosted: Jun 25th, '15, 16:27 
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"Stuff training" snigger :roll:

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PostPosted: Jun 25th, '15, 16:46 
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Damian wrote:
i am in total agreeance with you sturt in fact i that's what i will get my self for christmas. 2 good text books, but for now, but don't let that stop the discussion. i saw a system on youtube that doesn't use mechanical filtration

https://www.youtube.com/watch?v=FrAycoWUmVM

i am thinking its a plate filter if you look to the left in the vid.
how would filling the outer area with 1in PVC pipes running straight up would that improve solid capture?


If by plate filter you mean settling plate filter then no it won't work and neither would making one out of PVC.

Smaller particles just don't sink fast enough to be captured in this way.

Why don't you just use a back washable media filter to get the small particles?

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PostPosted: Jun 25th, '15, 17:55 
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Stuart Chignell wrote:
Animal welfare people are not going to be happy with a system like that.

150kg/m3 :shock:


Is that all? I know of a place that runs 250kg/m^3! I notice they removed that statement from their website sometime earlier this year, but I imagine that is why they need a giant Oxygen container for direct injection into the FTs.

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PostPosted: Jun 25th, '15, 18:00 
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250kg/m3 :? :? :? :?

Murray cod?

I'm all for high density systems but I'm not sure I'd want to push things that far.

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PostPosted: Jun 25th, '15, 18:05 
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Yea, Marianvale Blue near Goulburn. I think things could go very wrong very quickly at that density!

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PostPosted: Jun 25th, '15, 18:07 
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Yep!

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PostPosted: Jun 25th, '15, 19:03 
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Stuart Chignell wrote:

If by plate filter you mean settling plate filter then no it won't work and neither would making one out of PVC.

Smaller particles just don't sink fast enough to be captured in this way.

Why don't you just use a back washable media filter to get the small particles?


I am just looking at all my options i want to put as little strain on the final filtration. By Black washable media i am guessing you mean bio balls? i like the k1 also. but price and availability are my very limiting design factors. what type of filtration do you think is employed in the above system?

I think i should start a new tread by i am really interested in "intelligent" aquaponics design. Wondering what it would look like hypothetical, What do you think about that? the search term does not bring up much of what i think it should mean. By intelligent i mean a system that automatically and constantly measures water quality parameters and direct the waters to the desired treatment loop of the system. EG. too much TSS go to filtration loop, too much no3 goes to leafy plants loop, chemically pure water goes to fish loop. speeding up flowrates periodically after feeding, ph adjustment, etc.......

would call for some nice pumps and reliable solenoid valves


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PostPosted: Jun 26th, '15, 05:45 
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Damian wrote:
By Black washable media i am guessing you mean bio balls? i like the k1 also. but price and availability are my very limiting design factors.


Not necessarily. In many cases it just as much about the filter design rather than the media. Gravel will do if you design the filter appropriately.

Damian wrote:
what type of filtration do you think is employed in the above system?

Some thing effective but expensive.

Damian wrote:
I think i should start a new tread by i am really interested in "intelligent" aquaponics design. [

A standard CHIFT PIST design is an intelligent design for many applications.

Damian wrote:
By intelligent i mean a system that automatically and constantly measures water quality parameters and direct the waters to the desired treatment loop of the system. EG. too much TSS go to filtration loop, too much no3 goes to leafy plants loop, chemically pure water goes to fish loop. speeding up flowrates periodically after feeding, ph adjustment, etc.......

would call for some nice pumps and reliable solenoid valves


This is the kind of post that you often make that confuses me. On the one hand you are quibbling about the expense of K1 filter media and then you are talking about a control system that will cost tens of thousands of dollars. Even if you were to build it yourself based on raspberry PI or Arduino architecture and get all your sensors from some where cheap like atlas scientific you are talking a lot of money.

I've designed such control systems for 1000 to 10,000m2 AQ and AP systems and they cost a lot of money. Worth every penny for commercial systems because they ensure that you get the most out of your capital and seriously reduce if not eliminate most of the major risk factors.

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PostPosted: Jun 26th, '15, 17:11 
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Yup you are right, as can tell i am pretty much confused about what i want. I do know i want to build the equivalent of the "volkswagen beetle" for my location, by looking at different options and working out the math i am zeroing in on a final design.

Most my Quibble are with getting stuff imported..... the bureaucracy and the bulk shiping...

On this side of the pond design constraints are probably a lot different from most other places in the world, some of them i haven't found out how to explain them to non farmers or non nationals but local farmers know what i mean when i say it's a uphill battle. the biggest one is that we are a niche market (166 square miles) and we get 4 times our population per year at tourist season so the market is not really "stable", to have a unit price fluctuate 90% both ways in 6 weeks is not unheard of.

In other words this week a lb of parsley is $3 and 3 weeks later is $6 and 3 weeks later it $12..........i will stop my rant there. lol

Lets just say i like to visualise all types of aquaponics in all forms and take what i can............And i need to improve my writing skills.

I was thinking the control system wouldn't cost much more than a tablet with some meters... i have no idea what it will look like, or the cost, i am still at the google stage with this one. did up a little schematic i will post later for your feed back.


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PostPosted: Jun 26th, '15, 17:11 
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Yup you are right, as can tell i am pretty much confused about what i want. I do know i want to build the equivalent of the "volkswagen beetle" for my location, by looking at different options and working out the math i am zeroing in on a final design.

Most my Quibble are with getting stuff imported..... the bureaucracy and the bulk shiping...

On this side of the pond design constraints are probably a lot different from most other places in the world, some of them i haven't found out how to explain them to non farmers or non nationals but local farmers know what i mean when i say it's a uphill battle. the biggest one is that we are a niche market (166 square miles) and we get 4 times our population per year at tourist season so the market is not really "stable", to have a unit price fluctuate 90% both ways in 6 weeks is not unheard of.

In other words this week a lb of parsley is $3 and 3 weeks later is $6 and 3 weeks later it $12..........i will stop my rant there. lol

Lets just say i like to visualise all types of aquaponics in all forms and take what i can............And i need to improve my writing skills.

I was thinking the control system wouldn't cost much more than a tablet with some meters... i have no idea what it will look like, or the cost, i am still at the google stage with this one. did up a little schematic i will post later for your feed back.


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