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PostPosted: Oct 3rd, '19, 08:26 
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I tried a search, but my search skills must be lacking.

I am planning on using trout in my system. I live in Colorado on the eastern plains. I am planning on putting the fish tank in my barn to keep it out of the sunlight in the greenhouse I will be building, which will be attached to the barn.

How do I keep the water cool enough in the summer to keep the trout happy?


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PostPosted: Oct 4th, '19, 12:48 
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Thanks Online,
I appreciate the help.
Myke


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PostPosted: Oct 5th, '19, 02:55 
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You can use a water chiller, such as I use on my larger system. We are barely into spring, but i had to run it for a while yesterday, and will again for the next few days, with hot weather forecast, up to 37C on Monday.

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PostPosted: Oct 5th, '19, 06:15 
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Hey Gunna what is your chillers capacity? I was at a crayfish storage facility this week and they’re doing an upgrade and there were a heap of oldish chiller units out the front and I was thinking.....

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PostPosted: Oct 5th, '19, 07:43 
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Lol Skeggley. Nothing like seeing something that tempts you to do an upgrade.

I reckon Gunagullas chiller was a 2 HP, he has a fair bit of water volume.


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PostPosted: Oct 5th, '19, 09:09 
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Yea, 2HP rating. In use it draws 2-3kW, depending on air temp, lower being better!

The COP varies quite a bit with air temp, so I can get better than 6kW of cooling capacity on cool mornings, but it's more like 4kW during the day. I need about 15kWh of cooling to reduce the water temp by 1C, if there is no net heating from the sun etc.

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Larger 2nd system: http://www.backyardaquaponics.com/forum/viewtopic.php?f=18&t=24153
Solar powered Gunagulla Organic Garden
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http://gunagulla.com


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PostPosted: Oct 5th, '19, 10:02 
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Ok, cool, thanks guys. If I get back to site I’ll ask and if I can get one for the right price, like nothing, I’ll do it and keep it stored until I eat the 60 odd 300mm+ sp’s currently in the tank and do trout again. I have carried trout through 2 seasons before using evaporative cooling however it was stressful while at work on hot days...

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PostPosted: Oct 7th, '19, 14:27 
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I use vertical pipes and media beds. The vertical pipes are 2 m long. The water falling down these pipes cool down. A friend in the same zone as me only have grow beds and our water temperature differ with about 6 degrees Celsius.

Maybe this is an option ?

I do have a problem in winter when my water temperature hovered around 8 degrees Celsius. I added some black pipes (25 mm x 50 m) which I pumped the water through during the day and switched of at night to warm up the water that helped.


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PostPosted: Oct 7th, '19, 14:47 
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Chris Jbrt wrote:
The water falling down these pipes cool down...


When the air is really hot it will also warm the water up, to beyond the safe temperature for trout.

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My small AP system: http://backyardaquaponics.com/forum/viewtopic.php?f=18&t=16345
Larger 2nd system: http://www.backyardaquaponics.com/forum/viewtopic.php?f=18&t=24153
Solar powered Gunagulla Organic Garden
Fruit +Loomberah Wx
http://gunagulla.com


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