+1 to Ashley's comment also. Truthfully things like a skimmer are not an absolute necessity on a tank of this size if you're regular about cleaning detritus and doing water changes. IMO one of the best things to get as far as equipment or tools is a good set of test kits for NItrate, Calcium, and Alkalinity. That way you can tell what's going on with the water and what might need to be added. (I use Salifert BTW but have also used Red Sea Pro which works)