Hey guys looking for some advice as I'm new to the hobby. I'm currently running a 25 nano tank for just a little over a month with 2 small clownfish and firstly was wondering when I should start using the skimmer that came with the tank ? Also in the sump in the middle compartment I have a couple of bio balls and filter floss, is there anything else I should add ? Lastly I have a ReefLED 50 light was wondering if I should start using it or wait until I start putting in corals in a couple of months ?