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microinn
 Post subject: Andy's system
PostPosted: May 12th, '13, 13:45 

Joined: Mar 23rd, '13, 17:06
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Location: Kuala Lumpur, Malaysia
Hi,

My pond is a concrete pond about 15' x 8' x 4' including the filter, it was originally build for Koi. About one and half year back after most of the Koi died I started putting in Tilapia. A couples of months back after reading this forums and Affnan Aquaponics I start two system one with Square PVC gutter drain pipes and 2 Blue Barrel system using Affnan's siphon.

I had dismantle the Square PVC gutter drain pipe system due to fish poop problem. As for the Blue Barrel sytem I have serious iron deficiency problem and it is difficult to get Chelated iron here.

I just added 40 Jade Perch, 20 Jelawat, 20 Grass Carp and 10 Kelai (our local river fish)


New system setup

Image

After 1 months

Image

iron deficiency in the Water spinach (kang kong in cantonese)

Image

Can anyone suggest how to solve the iron issue as the volume of water is quite a lot and iron bars into the filter does not seems to have any impact at all. I cannot get Chelated iRon here. Will it helps if I get a few bags of iron fillings from workshop and place them in the growbed.

Andy
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scotty435
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 14:26 
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What's your pH running at? If it's low enough you might not need chelated iron.
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microinn
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 15:19 

Joined: Mar 23rd, '13, 17:06
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Location: Kuala Lumpur, Malaysia
PH 6.6 is that OK. I had not anything else but system has been running for many years with at least 60 to 80 Tilapia and 40 small JP.
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RupertofOZ
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 15:40 
pH 6.6 ... is about perfect...
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microinn
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 19:04 

Joined: Mar 23rd, '13, 17:06
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RupertofOZ wrote:
pH 6.6 ... is about perfect...


So I wait for the growbed to mature ? Or I have to get iron supplement ?

Andy
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RupertofOZ
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 19:28 
You probably wont have any trace element deficiencies at that pH level....
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jayendra
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 19:54 
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Love that system :) Do you swim in it ?
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dasboot
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 20:03 
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Nice looking system,do you have any algae issues ? From the pictures your water looks clear.
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microinn
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 20:17 

Joined: Mar 23rd, '13, 17:06
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dasboot wrote:
Nice looking system,do you have any algae issues ? From the pictures your water looks clear.


Nope, algae is on the wall and water has always been clear. I had not tested the water for a few years on the Ammonia / Nitrate and Nitrite.

Andy
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microinn
 Post subject: Re: Andy's system
PostPosted: May 12th, '13, 20:19 

Joined: Mar 23rd, '13, 17:06
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Location: Kuala Lumpur, Malaysia
RupertofOZ wrote:
You probably wont have any trace element deficiencies at that pH level....


Hi RupertofoZ,

I am a little lost "won't have any trace element deficiencies" but my plants most of them have iron deficiency symptoms.

Our tap water I tested is PH 7

Andy
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microinn
 Post subject: Re: Andy's system
PostPosted: May 13th, '13, 16:44 

Joined: Mar 23rd, '13, 17:06
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Location: Kuala Lumpur, Malaysia
Hi,

Great, I found a source for Chelated Iron @ RM40/= per kilo, I ordered 2 Kilo. It works out to be about USD12.50 per Kilo. Is there any calculation how much to put when I get them.

Andy
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rsevs3
 Post subject: Re: Andy's system
PostPosted: May 13th, '13, 18:22 
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What is it that you have managed to source microinn?
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microinn
 Post subject: Re: Andy's system
PostPosted: May 13th, '13, 20:23 

Joined: Mar 23rd, '13, 17:06
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rsevs3 wrote:
What is it that you have managed to source microinn?


chelated iron EDTA powder
took me quite some time to find here in Malaysia.
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ykchin_1
 Post subject: Re: Andy's system
PostPosted: Sep 28th, '13, 01:17 

Joined: Sep 28th, '13, 01:10
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Location: Penang Malaysia
Great, I found a source for Chelated Iron @ RM40/= per kilo, I ordered 2 Kilo. It works out to be about USD12.50 per Kilo. Is there any calculation how much to put when I get them.

Andy



Hi Andy, where did you buy the chelated iron?

Rgds,
YK
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Curious
 Post subject: Re: Andy's system
PostPosted: Jan 14th, '15, 15:33 
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Joined: Jan 9th, '13, 22:59
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Hi Andy,

Is there an update to your system? Did the Chelated Iron fix your problems?

Regards
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