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PostPosted: Nov 20th, '14, 16:26 
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Seriously, this cant be healthy.
Seriously, this cant be healthy.
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Johny5 wrote:
I received an email back from Atlas Scientific to day confirming that the DO probe is causing the issue. They have suggested a voltage isolator. So once I get the details we will see what can be done.

On the other hand the mechanical separation with the water and pump is working but I would rather the more elegant solution of he voltage isolator.


I don't know about elegant, but what about this...

If the system is flood and drain...

Stick a cup to the inside of your tank somewhere just below the high tide mark.

Mount the probe in the cup.

Pass a small charge through two wire pins that are 2mm apart, and mounted a little above the rim of the cup, and sample the voltage/resistance. This should tell when it's low tide, and time to take a reading from the probe.

The sample water is refreshed every time the tide comes back in.

:dontknow:

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PostPosted: Nov 20th, '14, 18:25 
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Hi Bullwinkle

The fish tank height is constant thanks to the 5000L sump tank. The other issue is the probe takes 5 minutes to settle once it is powered up. You need to power it up then wait before you take a reading.

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PostPosted: Nov 21st, '14, 10:36 
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Hi all

For those new members reading this thread when I use the term Digester it should have been Mineralization as I do run a Digester.

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PostPosted: Nov 21st, '14, 19:34 
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Johny5,

do you have a photo showing inside workings of your Digester, Mineralizer? I have used a shade cloth screen before in a up flow separator but in my new system I'm thinking of something more like a digester in a twin loop system.

Thanks and God bless, froggo

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PostPosted: Nov 22nd, '14, 15:06 
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The inside of the mineralization tank. Unfortunately it only has a small opening so the photos are not great. You can see the outlet filter screen and the 90mm riser in the center that has the air stone in it to circulate the water/solids.

Attachment:
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Attachment:
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The inside of the RFF.

Attachment:
_MG_3058.JPG
_MG_3058.JPG [ 83.67 KiB | Viewed 6368 times ]

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PostPosted: Nov 22nd, '14, 15:06 
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PostPosted: Nov 23rd, '14, 09:15 
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For those with scoria or media that is hard to dig in, here is a tool that helps me.


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PostPosted: Nov 24th, '14, 00:56 
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I guess I have just gotten used to using bare hands...

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PostPosted: Nov 24th, '14, 06:17 
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I have too to a point, but this is a lot quicker.

I still dig in the gravel by hand only.

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PostPosted: Nov 27th, '14, 09:25 
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Hi Johny5,

thanks for the pictures gives me a few more ideas,

God bless, froggo

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PostPosted: Nov 27th, '14, 09:32 
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You are welcome.

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PostPosted: Jan 30th, '15, 14:43 
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Just finished putting up some shade. One more bay to add at the end where the clamps are once we get back from holidays. Just enough time to plant some seeds before we go.

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PostPosted: Feb 24th, '15, 17:19 
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any new pics since holidays, the shadehouse looks great, any more progress? and how were your fish tanks with last weeks heat

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PostPosted: Feb 24th, '15, 19:18 
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Sorry no more progress since we came back. So far I have lost no fish despite the hot weather here reaching 38.5C. The tanks have peaked at 26.5C with a DO of 6.5 at the worst.

So far I have found that reducing tank water turn over to once every three hours is helping. I have not detected any ammonia or Nitrite readings yet.

Only two corn seeds germinated while we where gone. Not a good hit rate yet.

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PostPosted: Dec 20th, '15, 16:09 
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Just pulled the last 50 Trout from this year out. 4 Days of over 40c and the water has not gone over 24.5c so I have been quite happy. But just in case the adult Trout came out. That leaves 200 150mm Trout in the system for harvest this time next year.

Now to start eating Trout.

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