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Cycling New Tank - Questions
June 20, 2010
7:11 pm
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Hawthorne
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March 31, 2010
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Can please ask for some input from the collective knowledge here?

I have managed to wrangle an upgrade from my little 30l biorb to a 180l juwel aquarium as an early birthday present, shared with my daughter. I collected it yesterday, and added washed gravel and dechlorinated water. I had received a generous amount of used filter media from a friend with a huge tank, so I squeezed that well into the water, and also moved over a couple of the moss balls from the biorb.

I took the tank up to 3ppm ammonia last night to start cycling it. Tonight, it's down to 1ppm (which I think is probably a good thing), and there's no measurable nitrite, but the water has gone cloudy (like a moderately misty morning - I can still see my hand if I hold it behind the far wall of the tank). Should I worry about this, or is it a normal bacterial bloom?

I'm optimistically hoping that this means that a fair number of the bacteria in the donated filter material have survived, despite having to sit overnight in a bucket of the water removed from the biorb when I did a water change.

I've topped it back up to 3ppm ammonia tonight - can anybody offer any advice / criticism? Please?

June 21, 2010
7:19 am
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Bully
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Sounds like a bacterial bloom to me, they don't usually last more than a few days. As the bacteria finds equilibrium it will disappear. It sounds as though your cycle is well under way but, you don't mention nitrate. If you're not seeing nitrite then you should be seeing an increase in nitrate as the ammonia gets converted /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

June 21, 2010
10:20 am
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Hawthorne
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Yippee - thank you /biggrin.gif" style="vertical-align:middle" emoid=":D" border="0" alt="biggrin.gif" />

I am indeed seeing some nitrate forming, so hopefully it shouldn't be too long before everything stabilises and i can start the really fun part.

August 27, 2010
8:42 pm
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Senor Bastardo
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Since you already got a tank and got used filter media from a friend it´s just a matter of waiting. Just remember to feed minute amounts of food now and then or add some hardy fishes after couple of days since the bacteria won´t have much to feed on in the new gravel.

August 29, 2010
6:35 am
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Bluedave
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Sounds like Hawthorne is using ammonia to cycle the tank as he mentioned bringing the tank up to 3ppm? Just needs to ensure you add more ammonia on a regular basis to continue the cycle.

August 29, 2010
3:05 pm
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Nomad
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Although I know better, I rarely actually cycle a tank. As long as it has a large volume of water and only a few fish are added at a time, I really don't see it as necessary. Mostly I buy the fish and then set up the tank. Spur of the moment, fish are there, grab them... To date I have never lost a fish that I can put down to a poorly cycled tank. That includes marines and discus.

August 29, 2010
6:11 pm
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Eyrie
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But presumably you are putting mature media from your other tanks in the new filter, which would avoid, or at least much reduce, the cycling process.

Mature, sensible signature required for responsible position. Good prospects for the right candidate. Apply within.
August 30, 2010
7:59 am
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Nomad
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QUOTE (Eyrie @ Aug 30 2010, 03:54 AM) < {POST_SNAPBACK}>
But presumably you are putting mature media from your other tanks in the new filter, which would avoid, or at least much reduce, the cycling process.

Or not...

For some of my tanks I might use a bit of established gravel, but because I tend to sponge filters, I can't exactly go swapping them around. If I have the time before I get the fish, I might run a second sponge in an established tank for a few days to transfer when I get the fish. Like I said though, I usually don't anticipate the purchase of new fish until after it has occured.

Most recntly I have dumped 5 white clouds and a pair of paradise fish in about 15 liters until I got their tank set up. 3 weeks later I transfered them. OK, so I'm lazy. I admit it...
My Nudiceps(parilus?) which are shown with their spawn in the pics section went straight into about the same volume, a 30x30x30 cm tank 1/2 filled. Each day I added 2 liters until it was filled, then I drained it off to 1/2 full and started the 2 liters a day again. They spawned a couple of weeks later.
Many fish are the same. Add them to a new, uncycled tank and they spawn ahortly thereafter.

Just don't add too many and have a fair bulk of water allowed for each fish.

I am not advocating this approach. You have to be very lucky to get away with it and understand exactly what rules you are breaking.

I might add, I don't feed the fish for the first 3 days I have them and then only small amounts of live food for the next week.

August 30, 2010
5:13 pm
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Eyrie
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Probably worth keeping a spare sponge filter running in one of your more heavily stocked tanks in that case /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

Mature, sensible signature required for responsible position. Good prospects for the right candidate. Apply within.
August 30, 2010
10:02 pm
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Nomad
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QUOTE (Eyrie @ Aug 31 2010, 02:56 AM) < {POST_SNAPBACK}>
Probably worth keeping a spare sponge filter running in one of your more heavily stocked tanks in that case /smile.gif" style="vertical-align:middle" emoid=":)" border="0" alt="smile.gif" />

If ever I have a problem I promise I will kick myself and reflect upon the advice you have given me here and gloat on your behalf: "Eyrie told you so, idiot!"

However in 30 years and thousands of fish, I have not had a problem. Knock on wood.

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