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PostPosted: Aug 18th, '13, 11:10 
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o.M.G. OzGal WHAT WERE YOU THINKING!?!?!?!?!? Glad I could help.... :D

What about vacuum tubes for solar water heating Rupe/OG? As long as you can get hands on the vac tubes themselves, the rest can be DIY'd with basic copper soldering... Even if they only get you up to 15-25*C as opposed to the claimed 100C+ it should get you good enough for fish water and maybe even a few degrees up for ambient temp, no?


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PostPosted: Aug 18th, '13, 11:25 
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Fishbits wrote:
o.M.G. OzGal WHAT WERE YOU THINKING!?!?!?!?!? Glad I could help.... :D

What about vacuum tubes for solar water heating Rupe/OG? As long as you can get hands on the vac tubes themselves, the rest can be DIY'd with basic copper soldering... Even if they only get you up to 15-25*C as opposed to the claimed 100C+ it should get you good enough for fish water and maybe even a few degrees up for ambient temp, no?



Thanks - now I'm needlessly worrying. :?

Will look into vacuum tubes (gotta love you-tube).

We do have a bore that is down 108 mtrs but hubbie says there is no way he's running the pump 24/7 - such a party pooper. Pretty sure the water temp down there would be nice and stable.

If all else fails and we cant get the temps right for trout, I wonder what crumbed goldfish taste like?


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PostPosted: Aug 18th, '13, 11:29 
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Easy enough to heat the water a few degrees with evacuated tubes during the day, but you need a lot of insulation to maintain it overnight, otherwise you will stress your fish with too high a temperature range. Thermal shock is bad news for fish! I have Pex-Al-Pex pipe in the ground wrapped round my FT, to use the ground as a thermal mass, and although I have done a little bit of heating over winter, just with poly pipe so far (saving the evac tubes until I get some warm water fish), my first serious use of thermal regulation will be cooling the system water as the weather warms up in spring, to hopefully lengthen my trout growing season a bit.


Last edited by Gunagulla on Aug 18th, '13, 11:34, edited 1 time in total.

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PostPosted: Aug 18th, '13, 11:32 
Fishbits wrote:
o.M.G. OzGal WHAT WERE YOU THINKING!?!?!?!?!? ...

the rest can be DIY'd with basic copper soldering?

Oh no no no.... copper and fish (and crustaceans) do NOT go together...


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PostPosted: Aug 18th, '13, 11:36 
Save yourself the heartache... run two separate systems...

One for trout over winter... the other for Perch or whatever... they wont grow to plate size in a single summer anyway...

When you harvest the trout... add new (warm water fish) fingerlings...

When it's time for trout again... combine fingerlings with the other tank... which you'll soon begin harvesting...

Introduce trout fingerlings to now empty tank...

Repeat....


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PostPosted: Aug 18th, '13, 11:59 
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The water in the corrugated tank will never be exchange with the FT, its our heat sink. But poly pipe within the corrugated tank will act as the heat exchange.


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PostPosted: Aug 18th, '13, 12:22 
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Ozgal, have a read of this thread: viewtopic.php?f=1&t=17723
and also my system thread, which also has some info about using ground heat/cool.
As you have it pictured, you wont be able to get enough energy transfer between water and ground, due to lack of heat exchange surface area, and the reservoir of heat or "cool" in the ground would quickly be exhausted due to the small amount of available heat energy/heat sinking near the pipe.


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PostPosted: Aug 18th, '13, 20:16 
Seriously, this cant be healthy.
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Ozgal wrote:
TCLynx wrote:
They put a lot of effort into the research for the media for the zipgrow towers. So far when I've had people decide they are going to save money by going the cheaper DIY rout, they have usually come back later to get the real deal.

Good Luck with your experiments.


Hi TCLynx,

I'm sure your 100% spot on with your comment, but they just aren't available in Oz. Otherwise think we would definitely get some.

But I also have the view that mucky about with building things is half the fun of aquaponics. :wave1:


I'm sure shipping is pretty outrageous to get them shipped to Oz, But I'm sure the guys at BrightAgrotech are willing and able to sell them to people down under. At least I believe when they did their Grow Up Kickstarter they were offering to ship the Spring systems world wide.


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PostPosted: Sep 29th, '13, 11:11 
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Update :-

Attachment:
File comment: Bed frames
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Attachment:
File comment: Lined frames
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PostPosted: Sep 29th, '13, 11:19 
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More pics :-
Attachment:
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Beds were lined with rubber then the outsides of the beds were covered with foam roof insulation sheets.

Attachment:
File comment: Sump
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Attachment:
File comment: Insulated with Expol under floor insulation
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IMGP1950.jpg [ 111.99 KiB | Viewed 2838 times ]


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PostPosted: Sep 29th, '13, 11:23 
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Add rubber and water

Attachment:
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One bed filled with river stones and planted. Now our backs just have to get over the process before we go any further.

Attachment:
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PostPosted: Sep 29th, '13, 11:43 
Nicely done...


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PostPosted: Sep 30th, '13, 11:17 
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TOTALLY jealous of those bed frames OG. :notworthy: Can I put an order in for (7) @ 4'x80' now? :D


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PostPosted: Sep 30th, '13, 15:23 
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Looks great Ozgal. What's on tap for the middle of the greenhouse?


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PostPosted: Sep 30th, '13, 16:17 
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If you says "what's on tap" to an Aussie, we automatically think beer! So now I'm torn between the extra double grow beds that hubbie has welded or a row of beer kegs ..... decisions decisions


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