something is wrong with discuses

  • We are currently upgrading MFK. thanks! -neo
what kind of filters you use? I have a rena filstar 3 on my main planted tank and I change the pads once a year, and clean them half way through. I have a small HOB attached for water polishing/chemical filtration that I can change whenever I want.
 
the barb die off could have triggered a small cycle. if you have nitrites your tank is not completely cycled. do you have any ammonia? even trace amounts are toxic to fish.

waterchanges, salt and possibly antibiotics.
 
i use aquaclear i still dont understand why you guys said my tank is not cycled when its been up and running for about half a year
 
Because a "cycled" aka mature tank has ammonia & nitrite readings of 'ZERO' at all times. Nitrates will vary depending on your water change schedule but the 1st 2 named are always '0' in a cycled tank.
 
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