Tank Issues....

bleeding

AC Members
Nov 17, 2006
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I recently transfered a bunch of livebearers from a 20 gallon to a 55 because one of the seals broke and was leaking horribly. I had no time to properly cycle the 55 gallon (which has a new eheim 2028 on it), so I used part of the 20 gallon water, collected much of the rock substrate and placed into bags and put them in the tank (55 has a sand substrate) and all plants and ornaments were transferred. I put the hang on filter from the 20 onto the 55 as well.

The water conditions in the 20 were really really bad due to small filter/over population. I had lethal ammonia levels, and the pH was dropping from the 7.8 or so out of the tap, to around 6 in the tank. Nitrates were usually very high (+100).

The new tank has been up for about 4 days. I have been told that it may not go thru the normal cycle process. The first day I tested the water and the nitrates were at 20 ppm, 0 nitrites, but ammonia was at about 3.

The second day, nitrates were at about 30 ppm, no nitrite, and ammonia was about the same.

I tested last night, and nitrates were at 80 ppm, nitrite was .5 ppm, and ammonia was at 1 ppm.

I read in a previous post that I should add aquarium salt to help nitrite burnoff. Is that correct? Should I use the suggest dose/gallon or do a smaller amount?

Does this appear to be the normal sequence for cycling? Should i be aware/watching for anything else?


I have been doing a 5 gallon water change each day (ive read not to do more than 10%). Have not lost any fish yet....
 
are you using test strips or a liquid test kit? also the tank may be going through a mini cycle, although a little strange for it to be going backwards.
 
Keep on the water changes so ammonia and nitrites stay below .25

You do not need the salt.
 
bleeding said:
I have been doing a 5 gallon water change each day (ive read not to do more than 10%). Have not lost any fish yet....
Looks like your tank is going through a mini-cycle. Ammonia is going down, nitrite is going to spike and nitrates are already going through the roof. You have all bacteria that are necessary, but not enough. They'll grow back soon.

But ramp up your water changes. With this development, I'd do several 40% to 50% water changes, until the ammonia is down below 0.25 and the nitrates are below 20. The limit of 10% water changes is valid if you start treating for old tank syndrome, which means nitrates in the 100s what you probably had in the old tank. Obviously, your new tank is beyond that point. 3 ammonia, 0 nitrite and 20 nitrates, as you had on your first day, look more like a fresh tank and not like an old one. Here you have to do lots of massive water changes to keep conditions healthy.
 
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