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 Post subject: Vh202s starter system
PostPosted: Mar 3rd, '14, 19:23 
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So I've been lurking for a while and have started my system up. Have cycled with 3 goldfish and have since added 20 silver Perch. Ammonia is not yet at zero so I assume it's not completely cycled but my readings don't appear to be increasing so not too worried at this stage
I have also added a small NFT setup Image


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PostPosted: Mar 3rd, '14, 20:43 
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Sump tank before cutting growbedsImage
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Filled grow beds
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PostPosted: Mar 3rd, '14, 20:46 
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Sump tank
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NFT testing
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Seedlings
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PostPosted: Mar 14th, '14, 11:41 
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Amazed at the change in the root system in the NFT. This rocket plant was transplanted from my dirt beds into the nft tube this was the root system a few days after I moved it. Note the small roots starting to grow
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Fast forward a week and the roots have evolved substantially
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PostPosted: Mar 14th, '14, 13:22 
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You have some nice roots for fairly small plants. They should take off soon.

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PostPosted: Mar 18th, '14, 19:45 
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That's the hope. Transplanted some seedlings today but they didn't really do very well. I think their roots were too small. Anyone have much experience with nft seedlings?

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PostPosted: Mar 20th, '14, 07:46 
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Starting to get some yellow leaves on some radishes. any idea what might cause this? Perhaps needs to dose it with some seasol?

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PostPosted: Mar 20th, '14, 10:05 
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Yellowing is usually iron deficiencies. Just add some Iron chelates. Either DTPA or EDDHA (this one is the better of the two, but it'll discolour your water.).

If this is your starter system, I can't wait to see the full scale version!

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PostPosted: Mar 24th, '14, 19:47 
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Haha it ain't getting any bigger. My fiancée is starting to give me that disapproving look every time i propose an upgrade :)
On that note i added a new addition. An in ground sump!
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I went to the river Murray on the weekend and tried to catch some yabbies but only came back with a handful of shrimp. Threw them in there to see what happens. Hopefully next time I have more luck with the yabbies.

I have an iron chelate powder I'll check what it is. What sort of dosage rate is recommended?


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PostPosted: Mar 25th, '14, 13:24 
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On another note I have been having issues getting my pH to drop below 8.2
I suspect it is due to the scoria I got being slightly alkaline. The system started around the low 7s but stabilised really quickly at 8.
I suspect this may also be another problem with regards to my plants having access to the correct nutrients.

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PostPosted: Mar 27th, '14, 06:21 
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Well tested again today, had a massive drop in nitrates due to all the water additions and exchanges ive been doing while adding the sump tank. Current values are
pH 8.2
Ammonia 0.25 ppm
Nitrate 5ppm

Nitrates were previously up around 40 before I dumped a whole heap of water so have clearly been diluted somewhat, anyway I threw some scoria into some vinegar to see how it reacted. While there were some bubbles it was substantially less than when I first got my system. I suspect that the pH will drop over time all I need is patience for whatever base that is present in the rocks to be used up before it will drop a bit.

Another issue I have is a very small amount of algae forming on the top surface of my fish tank, while I suspect this is normal I figured it worth asking.


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PostPosted: Mar 27th, '14, 09:50 
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vh202 wrote:
I threw some scoria into some vinegar to see how it reacted. While there were some bubbles it was substantially less than when I first got my system. I suspect that the pH will drop over time all I need is patience for whatever base that is present in the rocks to be used up before it will drop a bit.


I use red scoria mixed with Hydroton for AP and it took about two years for the pH to fall so I'm pretty sure you are correct. You could probably adjust the top up water pH and make it happen sooner. Fish stocking levels also play a role and of course how much buffer is present. Batches of scoria vary and some don't seem to cause much difficulty.

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PostPosted: Mar 27th, '14, 09:52 
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Did you have any issues with nutrient uptake in your plants? What pH did it sit at?

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PostPosted: Mar 27th, '14, 10:27 
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vh202 wrote:
Haha it ain't getting any bigger. My fiancée is starting to give me that disapproving look every time i propose an upgrade.

I have an iron chelate powder I'll check what it is. What sort of dosage rate is recommended?



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Sorry, I missed the updates. I think it's 1tsp per 1000L of water, but I usually keep an eye on the plants. Add a tsp, wait a few week, keep an eye on the colour of the plants, add another teaspoon if it isn't greening up. You'll get a feeling for it when it's getting low on Iron.

And if you're anywhere near Elizabeth, feel free to bring your fiancée around to see my system. Everything is thriving! It'd convince me to go bigger. I've just got to finish prettying up my backyard, which should be sorted in the next few weekends (hopefully).

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PostPosted: Mar 27th, '14, 10:31 
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I'm having some serious space issues that's what's really holding me back. She has signed off on a front yard expansion if I can make it look good haha.
I actually live in prospect(I presume you mean Elizabeth in Adelaide) so it might not be a bad idea to check out another system at some point just to see if I can pick up any pointers.

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