Emergency Please Help - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 6 Old 04-10-2011, 09:48 AM Thread Starter
SGDude's Avatar
Emergency Please Help

My 46gal QT has been running for years,
new filter transition about 8 weeks ago.

Yesterday ammonia 0.25 nitrite 0.00.

The power went out for 4 hours last night.

It had 2 dead rainbows this morning.

Today ammonia 4.0 nitrite 1.0.

I have started a water change right now.

How much water do I do 30%, 50% 70% ???

Do I need to rinse or clean the canister filter?

Thank you.
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post #2 of 6 Old 04-10-2011, 10:14 AM Thread Starter
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Did a 30% water change now.

Starting on another 50% in a minute.

Should I just let the filter keep running?

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post #3 of 6 Old 04-10-2011, 10:48 AM
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Sorry to hear about your fish :(

Chances are you lost your beneficial bacteria based on what your readings are. Do you have any other established tanks that you can pull some of the media from to put in the canister?

I'd use triple + doses of Prime with the water changes in the meantime.

Animal testing is a terrible idea; they get all nervous and give the wrong answers.
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post #4 of 6 Old 04-10-2011, 11:23 AM Thread Starter
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I have stress coat for now.

My prime is like 3 years s
old, I can't tell if it expires.

Working on it.

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post #5 of 6 Old 04-10-2011, 04:35 PM
jeaninel's Avatar
How long has it been since you last cleaned the filter? If you are going through a re-cycle of the tank I would not mess with the filter until your bacteria colony re-establishes itself.

150 Gallon - Mostly American Cichlids
135 Gallon - Angelfish Community
75 Gallon - Odd couple (Polleni/Angelfish)
55 Gallon - African tank
20 Gallon Long - QT
10 Gallon - Empty
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post #6 of 6 Old 04-10-2011, 04:35 PM
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Use the Prime. Do not use Stress Coat or any other product.

Do major water change, up to 75% of the tank using Prime; once is sufficient.

Rinse the filter thoroughly.

Later I will explain the rationale of this. But first thing is to fix the water.


Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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