hello everyone. I have brought a new fish tank on monday. It has been set up for three days with everything in it including the filter, the heater etc. I have washed all the ornaments but the water has gone cloudy, not on the surface but all of the water. I tested the water and the amonia is fine but the nitrates and the nitrite levels are high! The tank I have brought is the fish box 60 from pets at home. Tried to add some fish today, only a couple because you shouldn't add too many fish all at once. We added two odessa barbs because are interested in having a barb set up in our auarium....no tiger barbs though! we left the bag in the tank for ten minutes and then released the fish within an hour or so they began to swim around and then shot up to the surface and then they died. So afterwards I have done a waterchange. is it just a case of waiting until the cloudiness has gone? I know that you are supposed to add fish so that the tank can start to cycle but it is clearly not ready yet. Just wanted some extra advice as have never kept fish in my life. Am also paranoid about the tank cracking and leaking everywhere. We are renting lol and 60 ltrs is a lot of water to leak everywhere. Maybe I should wait another week before I put any fish in? thank you!!