I've started my new hobby with a 10g tank that I had from before, and I've purchased the right lighting and a good biowheel filter to get started. I started with new Caribbean sand, a couple of dead rocks and few live rocks, some with corals on them. I also bought different corals. The corals are doing really great, but I can't get a fish to live in the tank for more than a couple of weeks. I already lost 6 fishes so far, and the current small yellow boxfish just developed Ich.
I monitor the water quality almost daily, do PWC
every 2- 3 weeks, however I had my major losses immediately after the water change.
Can any one advice please what I can do to stabilize the situation and have fish live longer in this tank?!
Here is a picture attached