Can you guys help me?

  • We are currently upgrading MFK. thanks! -neo
check your filter make sure it can filter 3- 5times hour and what type of fish and how big are they ,make sure the tank is not in front of a window. and do check your tape I had problems with city supply before.
 
Yea you say you have 15 small fish but what type of fish and how small.. 15 fish in a 30 is probably going to be overstocked unless it's guppies..

What type of filter is it (manufacturer and model number)..
 
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