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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 13th, '15, 12:13 
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So, the nitrite continues to be off the scale (by ~10 times!!!).

Today's water test

pH steady at 6.8
Ammonia still zero
Nitrites - off the planet - 1:10 dilution was still 5 ppm
Nitrates steady at 5-10 ppm

Should I be worried about the nitrites or just let the system do its thing?

Meanwhile, I have welded up brackets for the frame for the grow towers, so making some progress there... Will post some photos after the Open Vegie Garden Day tomorrow http://www.wellington.vic.gov.au/Lists/ ... arden-Tour

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 13th, '15, 12:58 
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Nice build! I especially like the wooden siding on the IBC cages.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 13th, '15, 13:18 
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Great build, you got me thinking of cladding now and not painting.


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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 13th, '15, 13:30 
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@JoC - I would suggest some water change if you are worried about your fishes/Yabbies to bring it down, you should also slow down or stop feeding till the readings comes down.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 13th, '15, 13:54 
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Wait it out - maybe another few days, plenty of air and some salt.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 14th, '15, 10:36 
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Awesome build!
Looking forward to seeing your Vertical towers!
Please post many pictures!


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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 16th, '15, 07:47 
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Thanks for the lovely comments BadDad, RustyRapier & JimV.

And thanks for the advice Jayendra & Curious.

I decided to wait out the nitrite spike without doing much seems the fish that shall not be named and the yabbies were doing okay. I had stopped feeding the fish, although it had some duckweed it could nibble on in the FT, but made sure the yabbies still had some grated carrot in the hope that they will eat that instead of each other.

Yesterday's water tests
pH holding steady at 6.8 - 7
Ammonia steady at 0
Nitrite 1:10 dilution dropping to 0.5ppm >> ~5ppm :thumbright:
Nitrate 80ppm

After the water test I had to add 100-150 litres of top up water as the very slow leak I had from the bulkhead through the bottom of the half barrel continuous flood GB appears to be turning into a faster leak :-x . I will wait until the watercress seedlings are big enough to rescue and the towers are in place before emptying the barrel and fixing the problem.

I also finally put in a seedling tray of shell grit in the sumptank for the yabbies. It will help provide a bit of substrate for them to explore, and add some calcium to the water (for fruits and yabby shells) and buffer the pH a bit if it gets acidic.

Today's water tests
pH increased to 7.2 (shell grit?)
Ammonia 0
Nitrite continues to drop with 1:1 dilution 1ppm & normal test 2-5ppm :cheers:
Nitrate 20-40ppm
It looks like I have lost around 30-40 litres overnight :upset:

In celebration of nitrite returning from previously stratospheric levels, I fed the fish that shall not be named some old goldfish flakes. It had been crashing around the FT so vigorously that it knocked out the SLO the other day which wasn't helpful when trying to explain how the AP system worked at the Open Vegie Garden Day on Saturday. There was a lot of interest in AP - blokes especially seem to be interested; it must bring out the inner engineer with all those pipes and pumps and frames and construction stuff, and you can go fishing in your own yard :wink:

No photos until my technically savvy OH completes the rebuild of my computer next weekend :notworthy: - hard drive spat it... The Raspberry Pi he got for monitoring the AP system has come in handy to help with the rebuild.

Maybe I can get trout fingerlings later this week...

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 16th, '15, 10:51 
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@joc - If you take a look at my system, i myself was running CF with some small leaks. Was gonna tell you to leave it be, the bio-film build up will plug it, but 30-40L over night is slightly :upset: . You can try some silicone sealers if you are hesitant to take the whole system apart.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 16th, '15, 12:19 
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Where are the leaks? Shouldn't have leaks with pipe work. Could be evap?

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 16th, '15, 12:42 
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Hi JoC, if you find at some stage you want to get a bit more serious with your yabbies, Id recommend switching to a commercial marron pellet. They are sinking pellets and have all the goodies required for health and growth. You could then get maximum health and growth with minimal effort.

I use this one but there are a few varieties out there.
Attachment:
pellets.png
pellets.png [ 80.51 KiB | Viewed 1636 times ]

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 17th, '15, 10:58 
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Charlie wrote:
Hi JoC, if you find at some stage you want to get a bit more serious with your yabbies, Id recommend switching to a commercial marron pellet. They are sinking pellets and have all the goodies required for health and growth. You could then get maximum health and growth with minimal effort.

I use this one but there are a few varieties out there.
Attachment:
pellets.png


Thanks Charlie, I will look into where I can get a small quantity of the pellets just to make my life easy and the yabbies lives healthier. Had a close look and I reckon a few more have been eaten or they are well hidden in the PVC tubes. Big Blue has taken over the orange bags I put into the milk crate - seems to like it there. Will load up some more photos when the photo editor is installed on the new hard drive. One day I will fish them out and see how many males & females I have. The ones that are left are doing a good job on keeping the ST clean.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 17th, '15, 11:08 
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jayendra wrote:
Where are the leaks? Shouldn't have leaks with pipe work. Could be evap?
Curious wrote:
@joc - If you take a look at my system, i myself was running CF with some small leaks. Was gonna tell you to leave it be, the bio-film build up will plug it, but 30-40L over night is slightly :upset: . You can try some silicone sealers if you are hesitant to take the whole system apart.

Regards


Hi Jay and Curious - after the initial loss after topping up the other day, the losses seem to have slowed down a bit. I have only lost around 8 cm in total from the ST over 2 days. Its still more than it should be, and I can see where the leak is, but can't get to it. The bulkhead fitting in the bottom of the barrel was leaking slightly when I set it up despite lots of fiddling, and I was hoping that the biofilm would take care of it. I don't mind a slight leak there as it will water the mint and the crimson glory vine on the pergola which provides summer shade for the FT and the west wall of the house. Now that it has slowed a bit, I will leave it be and monitor the situation...

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 17th, '15, 11:37 
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:laughing3: :laughing3: THE FISH FARM HAS CYCLED :headbang: :headbang:

Today's water test was very exciting :toothy7:

pH steady at 7.2 (must be the shell grit)
Ammonia steady at 0
Nitrite has dropped to 0 :wav:
Nitrate bouncing around at 20 ppm

Seems I can't add photos at the moment (no editor installed on the new hard drive yet...), I thought I would have a play with the open source spreadsheet program that has been installed. I have graphed the water test results since 2 March (really? only 2 weeks ago?). The system was filled on 21 February just over 3 weeks ago - why has cycling seemingly taken forever :?

Attachment:
File comment: 'The Fish Farm' cycling graph 0-90ppm Y axis
Fish Farm cycling graph 0-90ppm Y axis.jpg
Fish Farm cycling graph 0-90ppm Y axis.jpg [ 29.06 KiB | Viewed 1632 times ]


I have also adjusted the Y axis so you can see the pH and ammonia results better. For the dataphiles out there, I have split the difference when I recorded a range (eg. 0-5ppm is graphed as 2.5), and the higher nitrite results are based on some very dodgy dilutions (1:1 - 1:10 depending on how much off the chart the NO2 was). I am using the API Freshwater Master Test Kit.

Attachment:
File comment: 'The Fish Farm' cycling graph 0-8ppm Y axis
Fish Farm cycling graph 0-8ppm Y axis.jpg
Fish Farm cycling graph 0-8ppm Y axis.jpg [ 27.7 KiB | Viewed 1632 times ]



Yesterday I added a teaspoon of iron chelates dissolved in a watering can as the plants looked a little pale. A bit later I added a teaspoon of potash and 3 caps of liquid seaweed concentrate dissolved in another watering can. I thought the yellowing and crisping of the older leaves on the English spinach may be potassium deficiency. I thought I should do that before getting the trout fingerlings. After reading more advice from Mr Damage, I probably should only add a capful of liquid seaweed a week or fortnight now that the system has cycled.

Now I have so many questions about the trout fingerlings - where to get them :?: (have figured that out I think, will give Noojee Trout Farm a call), how to get them home alive :?: (they should put them in a bag with oxygen and I can just sit them in the large esky), how to introduce them to the FT without shocking them too much :?: what to feed them :?: where to get the feed :?: how much, how often... :?:

Its all so much fun, isn't it? :toothy7:

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 17th, '15, 14:56 
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Hey Joc,

Noojee have fingerlings 2$ and yearlings 3$ - I think that is for a quantity of around 30-50 - changes with more or less quantity.
They also sell food but its more expensive than buying a whole bag from elsewhere.
Ideal fish feed can sell 80$ bags of skreeting but they are the other side of city.

We could get some delivered to an address in the city and I or yourself could pickup.

Trout will be fine back to mafra - yes oxygenated bags that last ages - temperature depending.
Introduce just place bag (unopened) into tank (which adjusts temp). Then slowly let some water in - mine were find without the PH adjustment method.

How many are you getting? - I suggest yearlings if you don't have an RFF filter and don't want to massively feed and create too much gunk. But getting this early, fingerlings will be excellent size by december.

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 Post subject: Re: The Fish Farm - JoC
PostPosted: Mar 17th, '15, 14:57 
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Did you seed your system with someones AP water?
Thats a good amount of time for full cycle. It took 6 weeks in winter for me from scratch and 12 days for my other system which I seeded from 1st system and it was summer!

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