First of all IMO
, you have way to many fish for a six gallon set-up even for a cycle. At most once your tank is cycled and stabilized it will hold 1-2 small SW
fish. The Damsels you have now can get 6"+ under ideal conditions. I have seen them even bigger in a large display.
I would strongly suggest you return them if possible as they most likely will not last long in this setup not to mention these are very territorial fish.
Not sure if you are new to the hobby and I do not want to discourage you, but if possible I would look at a larger tank if possible. Even once cycled a 6 gallon tank will be tough to maintain good water quality without a lot of work. Most would refer to this size tank as a Nano. The filtration provided with the eclipse is OK for FW
, but way less than Ideal for SW
I would suggest 30 gallon or larger for SW
. Don't mean to be harsh, but I have seen and read about a lot of people becoming frustrated and giving up because they get started off on the wrong foot. Do some reading and research and you will be a lot happier in the long run.