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 Post subject: Fishy Farmer's System
PostPosted: Nov 9th, '14, 21:29 
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Hi everyone, my system is located in Vienna Austria, although I'm from QLD, Australia.

It's a pretty simple system using two aprox 50L flood and drain media beds(hydroton) above a 200L aquarium.
The aquarium has 9 goldfish( most about 5cm long)

I'm growing lettuce and chilli and using a DIY LED fixture I made. I dont have a sump tank or anything like that it's very basic.

P.H. is 6.4ish, water temps are stable around 24c this system is about 9 months old



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I have a few questions I'll ask in another post.

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PostPosted: Nov 9th, '14, 21:35 
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Can't find any recent pics at the moment ill take some soon but here are some time lapse vid of the garden.

https://www.youtube.com/watch?v=h2JJP7JpgYI
https://www.youtube.com/watch?v=no4HQHiDP3k


I'm wondering about minaralization of the fish poo, can i put gravel in my tank and let it happen there?

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PostPosted: Nov 9th, '14, 22:19 
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I think aquariums operate a bit like that, but I doubt you have enough air and water flow through the gravel in the bottom of the FT to get efficient nitrification.

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PostPosted: Nov 10th, '14, 18:09 
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PostPosted: Nov 11th, '14, 03:14 
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Slowboat wrote:
I think aquariums operate a bit like that, but I doubt you have enough air and water flow through the gravel in the bottom of the FT to get efficient nitrification.



thanks slowboat, orriginally had an extension hose on the pump to suck the poo off the floor, worked great but after a few weeks the weight of the poo in the hose going up to th egrow bed woudl slow the flow down and mess with my syphons.

Thought about adding a sump tank with a SLO from the Ft but seems like a lot of hassle, plus I may be moving back home next year so dont wanna put any more money into it.

may have to keep vacuming the FT from time to time and just live with the extra work

Cheers

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PostPosted: Feb 4th, '15, 02:56 
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its been a while since i updated, just came back from xmas in QLD, was nice to be at the beach.

I've moved the system and changed a few things, at the moment im building 2 more lights, this time using cree cobs and have also ditched the syphons for a constant flood gravel bed flowing into a DWC floating raft bed. the beds are both upgraded and now measure aprox 80x40cm(supposed to be 95L each)

im germinating some chilli seeds and the lettuce are just sprouting in the DWC as well as arulgala spinach etc(greens in general)


I decided to run 2 of my air out lets into the gravel bed(with an airstone) and two into the floating raft-im still a bit worried how chilli will do in the dwc but even though ive not seen this done i trusted my experince in hydroponics to figure it at least wont be bad for the beds..any thoughts?

pics will come soon

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PostPosted: Mar 12th, '15, 02:10 
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here are some pic updates of the new set up


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File comment: 2nd bed, flow into pots then floating raft. mint lettuce/other herbs
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File comment: first growbed, chilli
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PostPosted: Mar 12th, '15, 03:18 
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Looks good, is that rosemary in the net pot between the lettuce and mint?


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PostPosted: Mar 12th, '15, 22:08 
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yep, good eyes

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PostPosted: Apr 1st, '15, 18:11 
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https://www.youtube.com/watch?v=MGGIWWav_xo

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PostPosted: Apr 7th, '15, 01:12 
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so another update here:

the ph was at about 7 and had noticed some deficiencies so dropped it to 6.2 and started over feeding the fish as nitrates were around 200ppm (nirtites 0) we are harvesting about 2-3 of these per week now


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PostPosted: Apr 7th, '15, 01:18 
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i hope to get a bit of help from you

i have never supplemented with anything in this system but i think i might need to

what do you think is up with these chilli/pepper plants? worth worrying about or just roll with it?

to me it looks like a magnesium def possibly and or iron....


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PostPosted: Apr 11th, '15, 04:14 
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root aphids?

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PostPosted: Apr 12th, '15, 04:36 
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Sorry fishyfarmer, I missed your posts. I don't think it's root aphids. It looks like nutrient deficiencies but it might be more than one showing. Root rot could be one possible cause but I have doubts this is it.

Mobile and Immobile Nutrients -
Mobile Nutrients - Deficiencies show on old growth first
Nitrogen, Phosphorus, Potassium, Molybdenum, Magnesium and Zinc

Immobile Nutrients - Deficiencies show on new growth first
Iron, Copper, Manganese, Chlorine, Cobalt, Boron, Calcium, Sulfur

What are your nitrates running? It would also be good to know the pH and temp of the water.


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PostPosted: Apr 13th, '15, 01:49 
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scotty435 wrote:
Sorry fishyfarmer, I missed your posts. I don't think it's root aphids. It looks like nutrient deficiencies but it might be more than one showing. Root rot could be one possible cause but I have doubts this is it.

Mobile and Immobile Nutrients -
Mobile Nutrients - Deficiencies show on old growth first
Nitrogen, Phosphorus, Potassium, Molybdenum, Magnesium and Zinc

Immobile Nutrients - Deficiencies show on new growth first
Iron, Copper, Manganese, Chlorine, Cobalt, Boron, Calcium, Sulfur

What are your nitrates running? It would also be good to know the pH and temp of the water.



tnx

PH 6.8(been running at about 6.5 usually tap water is 8.5 so didnt ph down today)
water temp 23-24
air temp19-20
nitrates 300ish

all the seedlings have stalled for over 2 wks now and starting to wilt


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