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PostPosted: Jan 14th, '13, 14:19 
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Thanks for the input PLJ. I would have never thought of that.. I kinda just knocked up the grate out of some old decking timber I built some planters out off.
I usually place the lid for the tank on top of it. As the tank is actually just a large storage container..
I used it to partially shade the tank as the conservatory has a clear polycarb roof and gets direct afternoon sun for an hour or so..
Also and it looked pretty.. But I may ditch it if it could be harmfull to the fish.


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PostPosted: Jan 14th, '13, 14:23 
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Sleepe wrote:
4000k or over on the tubes, or cool white, I would put some decent reflectors on those and get them a bit closer. :)

Tubes are 4000k triphosfor cool white. They were built on the cheap...This system is in a conservatory with a clear polycarb roof so the flouros are just supplementing the natural light..
If I get more serious I may upgrade to some grolux tubes. But they are quite expensive.


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PostPosted: Jan 14th, '13, 14:28 
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As an update to the cycling of this system. The ammonia is now up to 0.5ppm and the Nitrites look in between 0-0.25ppm. So things are progressing nicely... pH is still solid at 7.6


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PostPosted: Jan 18th, '13, 14:26 
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Just a quick question about cycling my system.
Results are: PH 7.4, Ammonia 0.5, Nitrites 1.0, and Nitrates slightly darker than the 0 colour on the API test sheet but no where near Orange.

My question is how high will my nitrites likely go before I start to see nitrates?...
And my ammonia has been solid at 0.5ppm, feeding fish twice per day. Does this just mean that the bacteria is converting it to nitrites to keep it at 0.5?..

Should I lower my feed?..

Also my pump growbed fill cycle is flood 15min drained for 15min is this o.k?..


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PostPosted: Jan 18th, '13, 17:15 
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viewtopic.php?p=347216#p347216


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PostPosted: Jan 18th, '13, 18:32 
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i love the PLC, i just did all my parents with relays triggering relays being triggered by float switches etc

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PostPosted: Jan 19th, '13, 06:29 
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DrLuke wrote:
http://www.backyardaquaponics.com/forum/viewtopic.php?p=347216#p347216

Awesome Dr Luke thanks for the Link....!!..


IceManDude wrote:
i love the PLC, i just did all my parents with relays triggering relays being triggered by float switches etc


Yeah It was really cheap as well. The most basic as far as PLC's go. Just 6 I/O and 4 relay outputs.

I really like the PLC as I can add some logic to the inputs from the flow switch. I am also using relays triggering relays..lol. As I didn't wanna switch 240v on the contact of the PLC. So the PLC is just switching 24v to energise the relays switching 240v. Gives me some nice electrical isolation as well..


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PostPosted: Jan 21st, '13, 12:46 
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Just a little update.. The Nitrates have just started to show!.. So i'm happy about that.. Looks like the ammonia is dropping also. Down to 0.25ppm. Nitrites have spiked though at 2.0ppm. But I assume this will start retreating as the nitrates build further..

One thing I have noticed through the entire cycling. Is that my lettuces have been doing fine. It's been two weeks now and they are going great!.
Image

Also Just a pic of my test results from last night..
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PostPosted: Jan 29th, '13, 15:36 
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So a few things have gone on recently.. Lettuces are doing well. But as this is quite a small system the water level needed topping up. so I let some tap water stand for a day and added 20L of water. But this has now put my PH up to 8.2!!!.
I'm really hoping this should drop like the water did when i first filled the system.

The tank now has a light brown film all over it below the water line. Is this normal?..

My nitrites before adding the extra water had spiked.. But the Nitrates are still not showing in any great quantity. Is this because there was still a slight amount of ammonia present?..

I have lowered my feeding rate now in hope of the ammonia dropping to zero. Right now its slightly above but not quite 0.25ppm.

I may need to get some PH down and gradually lower the PH.. the fish look quite lethargic...


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PostPosted: Jan 29th, '13, 16:47 
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Patience, all of what you describe appears normal to me.

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PostPosted: Jan 30th, '13, 11:56 
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O.k. Well it's always good to get an extra opinion. I start to second guess myself sometimes..


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PostPosted: Jan 30th, '13, 12:06 
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While you let your water sit is a good idea to bubble water through it. That will help the chlorine off gas.

I cant remember if you have or not, but i find that adding seasol, especially in the early stages will give your plants a nice boost :)

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PostPosted: Jan 30th, '13, 14:28 
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The crazy thing about the entire cycling of this system, is that the plants have never suffered.. They're going fine. If just a little slow..


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PostPosted: Feb 5th, '13, 11:31 
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OH DEAR!!! Had my first casualty this morning... One dead goldie.!!. But. I think My system could be classed as cycled now?.
My ammonia and nitrite have both dropped to zero. PH is solid at 8.0. But Nitrate has never shown?...
I'm assuming that this is because the plants are absorbing it all?... As they're doing great!.

I think the goldie just didn't make it through the Nitrite spike. As they were high for about a week. Oh well as long as the rest survive ill have to put that down to the hazards of cycling a brand new system with fish..


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PostPosted: Feb 10th, '13, 06:28 
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Does anyone have any input on this?.. Any help or advice would be greatly appreciated. I'm racking my brains here trying to pin this down.
I just lost another fish. But I suspect it was from the same thing. as his fins went black suggesting ammonia burns to me.
Although the ammonia was never that high 0.5ppm.

Any answer or opinion would be appreciated..


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