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PostPosted: Jul 4th, '12, 01:55 
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Here is the first part of my build. Constructive criticism is welcome.
My plan is to raise tilapia below (if I can find some) and veggies on top. My pump will be on a timer to flood for 15 then off for 45. I am not real happy with the grow bed as it is not flat and has deeper pockets. I might add a hanging GB that drains in to the main.
http://www.youtube.com/watch?v=2sMz42PKP5E

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PostPosted: Jul 4th, '12, 03:31 
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Very nicely made video.

Suggestions on vid. Perhaps some credits/references on the single IBC design? Or was this on the actual you tube description? I didn't see that. Also the "inner drain" is usually referee to as the standpipe and the outter pipe is the "media gaurd"

Other then that, excellent work and welcome to the mayhem.


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PostPosted: Jul 4th, '12, 07:10 
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Love your video, most people talk too much, you let the images say it for you, well done


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PostPosted: Jul 4th, '12, 10:27 
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Nice work on the video, filming and post production work.

I love the simplicity of these one IBC systems. The bang-for-buck in terms of fish and vege return from the available footprint just over one square metre is awesome.

One point for "next time": Instead of maximising the FT volume by cutting the IBC immediately below the top rail of the FT portion of the cage, cut it a little lower so the top of the media in the GB is just above the top rail of the GB and then allow some freeboard to stop the media falling out as this will give a deeper GB with more media, which provides more surface area for beneficial bacteria to colonise, which improves the filtration and nitrification.

(If you must think of it like this, a deeper GB in this instance allows "more" fish to be added. Following the "general rule-of-thumb", if your GB holds 200L media then you're limited to about 10 fish, but if you can squeeze another 10cm of GB depth from the FT part, the volume of media will be about 300L so you can have up to about 15 fish (lots of other factors dependent, of course) and there is still plenty of volume of water in the FT; a 50% gain in fish stock for giving up about 15% FT depth.)

Something like:
Attachment:
File comment: Single IBC system standing on solid surface (FT spikes down)
Single IBC on solid ground.PNG
Single IBC on solid ground.PNG [ 10.11 KiB | Viewed 1822 times ]




Scott

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