What is ur salinity level?
This is mine
U need to have all these kits, to check your water quality
What kind of filtration you've, these are mine
http://i277.photobucket.com/albums/k...3/DSC01964.jpg
http://i277.photobucket.com/albums/k...3/DSC01908.jpg
Also u need to add:- It comes wiv a measure cup for new tank set up, 100 litres - 10 ml
This is before i did all the above:- Notice the fish are hiding inside the rock, indication something is not right.
After modification (improve water condition, and filtration) this is my tank:- The fish are now swimming around happily.
YouTube - Beginner Nano tank by JN23 part 2