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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 17:50 
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actually its black pipe with blue lines I think its more like 30mm.

I drilled a hole about 20cm from the end into the fish tank and it just squirts into the fish tank (or up the clear pipe).
I don't think its sucking air in based on the cut of the clear tube at an angle and me swiveling it around to try different angles.
I was trying to get the air down lower into the tank? as this is better aeration?
Is there a tutorial on creating a Venturi?
At present the pump is pretty much pumping the whole tube with a bit of force (no gap between water and walls)
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mantis
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 17:53 
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My crude venturi is just a small hole in the inlet pipe above the water line and the pipe going down into the tank, and it sucks a lot of air
Got a venturi from Paul but haven't tried it out yet
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RupertofOZ
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 17:53 
Stick a small diameter "spaghetti" pipe in the hole... bevel cut the end of the pipe... and see if that sucks more air in...
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 17:56 
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Yeah I think i've tried that - but its the size of the water pipe thats not allowing a gap to be created.
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 17:58 
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This is interesting - maybe creating an elbow creates a bit more suction
http://www.youtube.com/watch?v=j47XbRzCcNo
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 18:21 
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Either I'm addicted to aquaponics or there are a lot of people looking at threads. 1500 mark :) I really love reading and learning from peoples journeys.
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Charlie
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 19:24 
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You've got it bad J-man :headbang:

Id say your one that will still be here in years to come.

:thumbleft:
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 19:45 
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I think its because I use to love science and then had some bad teachers later in high school:

Favourite thing was hiding a sheeps heart in the cupboard for 2 months and stinking out the science room.

Today at school I had a science sub period and I shared with the class what NH3 was :) (in a song of course)
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 10th, '13, 20:22 
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jayendra wrote:
I think its because I use to love science and then had some bad teachers later in high school:

Favourite thing was hiding a sheeps heart in the cupboard for 2 months and stinking out the science room.

Today at school I had a science sub period and I shared with the class what NH3 was :) (in a song of course)


went something like "N H 3 .. duh duh da duhhh You get if from PEE... duh .."
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 12th, '13, 16:31 
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PH - 7.5
NH3 - 3-4
NO2 - 5+
NO3 - .40
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 13th, '13, 18:46 
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Hey I've plotted a graph to show the progress so far.

Image
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 13th, '13, 18:48 
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jayendra wrote:
1. The time it takes to drain.
I did a test this morning and it took about 50mins from pump off (allowing for around 5mins of overflow) for the beds to drain completely.
Should I make the holes bigger ?


><<?? anyone?
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Charlie
 Post subject: Re: Warragul J
PostPosted: May 13th, '13, 19:13 
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Yea you could make them a bit bigger, what size are they now?
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 13th, '13, 19:18 
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2x 6mm
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jayendra
 Post subject: Re: Warragul J
PostPosted: May 16th, '13, 15:16 
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Ammonia down to 2ppm
Bok Choy is looking juicy and ready to harvest.
Rain today filled the sumps up a fair bit - overflow ?


Last edited by jayendra on May 16th, '13, 15:32, edited 1 time in total.

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