Don't test the water for a few hours will get a false reading.
Don't do large water changes it will slow the cycle down.
Airstone will help with the cycle, also salt what fish are in the tank.
Get a jug of tank water and add one tablespoon full of salt that should be fine with the catfish but no more.
http
/www.thetropicaltank.co.uk/cycling2.htm
http
/www.thetropicaltank.co.uk/cycling.htm
Don't do large water changes it will slow the cycle down.
Airstone will help with the cycle, also salt what fish are in the tank.
Get a jug of tank water and add one tablespoon full of salt that should be fine with the catfish but no more.
http

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