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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 07:51 
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freoboy wrote:
The trout won't neceserally die if they are used to cyclethe system, I used trout in mine to cycle it and they survived ammonia readings that were oftje chart :oops: BYAP also recommends cycling with whatever fish you are going to eat, just feed minimal amounts and test the water lots


I'm talking about worst case and accepting the implications.

You could take baby steps to make sure they all survive, but "eyes wide open" that using fish to cycle means fish can/will/may die.

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 07:53 
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Let's not forget that you were cycling your system in winter, based on the ammonia, temperature and pH relationship, at lower tank temperatures, ammonia is less toxic. Probably a different story if it was summer.

Sorry I had to clarify, don't want newbies to get the wrong idea. It seems to be happening a lot lately... Wonder if it has got something to do with the certain DVD...

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 09:21 
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fair enough VLT :)
yeh isnt fordy in aus too, so cycling in winter?

alot of newbies seem to be on the stock to the FT bandwagon ATM. and dont like it when they realise they cant have 50 fish with a bucket GB (not aimed at you fordy, just a OT post :) )

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 09:26 
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Before this reignites a long debate I thought I would give some background to me and my system.

I finished a aquatic biology degree in the mid 80's. Since then I have been working for the Department of Sustainability and Environment in Victoria. Apart from sailing and golf my main interest to date has been keeping both tropical and temperate marine aqariums. I have no recent photos but here are two from a year or so ago.

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I was also involved in a failed attempt to farm barramundi in Portland Victoria using the heated underground waters in the area. This was in the late 80's.

As for my aquaponics systems. The tanks were filled on May 5. Nitrate level is currently at 20 and increasing. ph today was 7.4. I consider this as cycled. I happy to be corrected.


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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 09:30 
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It can be done though. I only got the water pumping thru my system the day the trout were delivered. So far no deaths (unless they are jumping out and my dog has eaten all the evidence).

So far no problems, but I dont chuck mountains of food in there. I gave it a week from arrival before feeding them (there was mozzie larvae in the tank for them to eat any way) and then only small amounts for the next week or two. Granted this was about 8 - 10 weeks ago so the temperatures were a little warmer.

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The tanks were filled on May 5. Nitrate level is currently at 20 and increasing. ph today was 7.4.


What are your ammonia and nitrite levels?

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 09:54 
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Arbe...your system is 5000 litres? :bootyshake:

Fordy, appologies as I assumed you had not cycled. Seems you should be right if you have cycled your system and stock appropriately.

There is a trout farm around dandelong area. There is also Buxton's.

I would only stock about 10 fish though given you only have 240Litres of growbeds.

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 12:43 
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fordy2110 wrote:
As for my aquaponics systems. The tanks were filled on May 5. Nitrate level is currently at 20 and increasing. ph today was 7.4. I consider this as cycled. I happy to be corrected.


Typically it takes about two months to cycle a new system. What ammonia source did you provide to start the system cycling seeing that you seem to be only considering adding fish now?

And yes, please do check your ammonia and nitrite levels? A presence of nitrate is not an indication that the system is cycled, it merely suggests that there is the presence of bacteria to convert nitrite to nitrate. There may still be toxic levels of ammonia and nitrite in the water, and until ammonia and nitrite are both zero, then the system is considered cycled, but only to the bioload it is introduced to. If you had more fishes, the system will still have to go through mini-cycles to build up bacteria to handle the new bioloads...

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 Post subject: Re: Fordy's System
PostPosted: Jun 10th, '11, 12:57 
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I've cycled or seen cycled, hundreds of systems using fish, and that's not goldfish.


Hey, love the look of those tanks Fordy, where's Steve, he would be very impressed with that, he loves liverock..

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 Post subject: Re: Fordy's System
PostPosted: Jun 12th, '11, 17:10 
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No point getting fish this weekend although I'm quite please that my vegies taste ok. I woke this morning to find that the possums had discovered my grow beds.

The result below

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Above shows the pak choi eaten down to the grow media

Below shows the spinach also eaten

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Although you can't see it in the below photo I have erected bird netting from the roof eve to the top of the fence. Hopefully this will deter them. Otherwise the rabbit traps come out of storage.

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 Post subject: Re: Fordy's System
PostPosted: Jun 12th, '11, 17:18 
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I have nearly finished the frame of my system. I've put port holes in the bottom door. Above the fish tanks I have put some solar lights. While they will not be on all the time they throw enough light to highlight the portholes. Looks great at night.

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Macca above inspecting my work

Third door in place below. Only one more to go, this can be tomorrows job

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 Post subject: Re: Fordy's System
PostPosted: Jun 13th, '11, 08:41 
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Wow ypou actually own the REAL nemo and dori!!! Cool

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 Post subject: Re: Fordy's System
PostPosted: Jun 21st, '11, 08:29 
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Finished. No fish yet (should be getting to the hatchery in two weeks). Planning to put 10 rainbow trout in the bigger of the two tanks and 6 Murray Cod in the other. No major problems with the system other than the possums getting into the grow beds. I've had to put up netting to deter them. At the moment it seems to be working.

Below shows the finished product

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..and with the doors open

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I've also installed solar lights

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 Post subject: Re: Fordy's System
PostPosted: Jun 21st, '11, 16:28 
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A real professional job there Fordy.

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 Post subject: Re: Fordy's System
PostPosted: Jun 21st, '11, 16:53 
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Looks great :)

Could the living coral be incorporated into a AP system to help with the bio load?

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 Post subject: Re: Fordy's System
PostPosted: Jun 21st, '11, 19:18 
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Really great Fordy - wish I had your building skills. I think coral adds bioload doeasnt it? Plus salty water...

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