Any time Pingu! (any relation to the awesome TV show??)
Love to help and learn from fellow Aussies!
We can all learn a lot from the experts on this site - But still being new myself - here's my take on your parameters:
Temp: 24 (maybe a little too low - 25 should be the target)
PH: 7.9 (also could be higher - 8.2 is optimal)
Ammonia: 0.1 (ultimatley should be at zero)
Nitrate: 10ppm (this is good - shows that there is bacteria in your tank)
Nitrite: 0.05ppm (this COULD be a worry as with the ammonia)
Alkalinity: Normal 1.7-2.8 (sounds OK)
Ammonia and nitrite is generally a sign that your tank is going through another mini cycle - which could have slowly been effecting your fish.
What about your SG
? (Specific Gravity)
These are my tanks parameters:
Temp - 25-26
pH - 8.2
Ammonia - 0
Nitrite - 0
Nitrate - 20 (struggling to bring this down as I started with tap water now RODI
Keep the nano tank going, and it will be much easier to cylce the 140L tank you are getting!
PS - My martial arts instructor told me if we stop learning, we die.
Harsh way to put it, but it essentially, reality!