Is this normal?
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Is this normal?

This is a discussion on Is this normal? within the Tropical Fish Diseases forums, part of the Freshwater Fish and Aquariums category; --> My tank has been set up for roughly 3 months. I let my tank cycle starting with two fruity tetras, all levels were normal. ...

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Old 04-06-2008, 02:39 PM   #1
 
Is this normal?

My tank has been set up for roughly 3 months. I let my tank cycle starting with two fruity tetras, all levels were normal. I then added 3 more fish about 3 weeks later. Again, levels normal. About a month ago, I added a few live plants, no difference in levels. Yesterday, I decided I wanted to add some more fish. So i checked my levels. Ammonia 0, Nitrite .5, Nitrate 1.0, PH 7.6 (my ph has been 7.4-7.6 since it started) . So I added some more fish yesterday evening. I just checked my levels and now Ammonia is 0, Nitrite is 2.0, Nitrate is 5.0!!, and the PH jumped to 8.4! This fish are acting just fine, but I can't believe the Nitrate is so high.

The reason I am troubled is I have never seen this kind of jump in my numbers after adding new fish. However I have never had an aquarium with live plants in it.

Any help would be appreciated.

My last water change was March 28th, 10%.
I feed once a day, not more than they eat in 3 minutes
The tank is away from any windows, the only lighting the tank has is one 5500k daylight (18 watt) bulb. (I'm not worried about this, as the plants are flourishing and growing like crazy!)
I have a Marineland Wet-Dry Multi Filter Millennium 2000 (filter cartridge last changed on March 15th).
Temperature is always 75 degrees F.
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Old 04-06-2008, 03:33 PM   #2
 
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Nitrates are fine, up to 40ppm is safe for fish.
Nitrites are bad and getting worse. Should be under .25ppm if there are any at all. Another water change is needed. Just for future reference, if you have nitrites, do not add more fish.

As for the pH, that is a a mystery for me. The only thing I can think of is that the plants used up KH or maybe some snails and there is 0 KH in the tank. Are you able to test it? If so, please post your results. The only other thing that raises pH like that is crushed coral or other carbonate substance so unless you added chemicals, an ornament or something else to the tank I am at a loss.
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Old 04-06-2008, 08:05 PM   #3
 
thanks, I have had fishtanks before, but this is the first time I decided to test water and deal with the technical part of fish owning...so i am new to this (obviously). I can not test for KH...in fact I have never heard of it! But I will pick up a test kit for the KH.
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