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Old 04-24-2004, 12:01 PM   #1
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Cycling QT

I sure hope you meant it when you said there are no dumb questions.....I feel a little thickheaded here..

I started my 10 gal QT on 4/12 and added a raw uncooked unprocessed shrimp (whole thing) on 4/13. The ammonia went up to 3.0mg/l by the 17th and then up to 3.0-5.0 on the 19th. It is still at that level (3.0-5.0) today. Have I spiked yet? How long does it stay at the top of the spike before it starts going down? But, more importantly, do I take the shrimp out yet or do I wait until the ammonia goes down to 0.?

I know...you really thought there were no dumb questions....until this one...

Thanks
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Old 04-24-2004, 03:30 PM   #2
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The ammoina has definately spiked but you should have seen some decrease by now (12 days?). Two possible causes would be the shrimp is far too large for the water volume or you do not have enough hard surface area's for the bacteria to colonize.

Might be an idea to remove ½ the shrimp. I would also post how you have the QT set up. The entire shrimp should not be removed until you have both a nitrite and nitrate reading.

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Old 04-24-2004, 09:54 PM   #3
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Thanks, Steve.

I have a 10 gallon tank with a PetStupid generic HOB filter with a floss bag with carbon in it. I've got a heater set at 80 and some pvc fittings for when I add fish. I had to use new water when I started it as opposed to water from my main tank as I had a a little episode in there and need to leave it fallow for a while. Ates are 20 ppm and ites are somewhere between 0 and .5.

Next?
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Old 04-24-2004, 10:17 PM   #4
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Next?
Remove half the shrimp and then once you see a large natural reduction in ammonia levels (½), you should be able to remove what's left of the shrimp. If you remove it before the nitrosomonas have formed abundantly, you will have future problems.

I'm pretty sure it's just a matter of too much nutrient for the tank volume.

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Old 04-25-2004, 12:20 AM   #5
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Thanks again!!
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Old 05-01-2004, 01:11 PM   #6
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Well, I tried to take out 1/2 of the shrimp, but it was pretty much disintegrated so I got what I could. As of today, I still have 3.0 mg/l ammonia. Ates are 20 ppm and ites are at .3. Is this tank ever going to complete its cycle? The ammonia just doesn't seem to want to go down!! My main tank cycled faster than this!!

Is this taking too long or is it just me? Do I need to do anything else?

I'd really like to have a fish someday before I die....
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Old 05-01-2004, 03:38 PM   #7
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Is this taking too long or is it just me? Do I need to do anything else?

I'd really like to have a fish someday before I die....
LOL... it's probabley just to much DOC. If you are sure you have enough added surface area's for the bacteria (PVC pipe and the like) do a 15-20% water change to help ease down the ammonia. You already have the NO2 and NO3 so it should not interfere with the process, just speed it up a bit.

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Old 05-01-2004, 10:56 PM   #8
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I'll give it a try. Thanks!!
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Old 05-21-2004, 07:53 PM   #9
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OK. We're six weeks in and my NH3 isn't going down!! Its still 3.0 mg/L and the ites are at .8 I have done a 20% water change, the shrimp (or what was left of is) has been taken out as best I could weeks ago. Do I need to start this over again? Should I change the carbon in the filter? Take out the carbon? What do I need to do?

This isn't funny anymore. My main tank is now back up to speed after remaining fallow for about 8 weeks and the levels in there are fine. But, this QT won't get where I need to be to get fish. Arghhh!!!!!
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Old 05-21-2004, 08:51 PM   #10
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Do I need to start this over again? Should I change the carbon in the filter? Take out the carbon? What do I need to do?
No need to start again. Change the carbon for new and clean the filter pad in saltwater if there is one. Do a few more large water changes over a weeks time and you should see a differnce. It's most likely a build up of organics in the fitration media.

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