Currently have everything I need. But I still want to add more components in my sump. To was thinking maybe a calcium reactor and ozone but are these really that necessary. Any other equipment recommendations are welcome. Only bought skimmer so far.
Unless you just like gadgets, I wouldn't recommend any equipment other than a decent skimmer, great lights, internal circulation pumps, and maybe a heater w/ controller to start. You can add a calcium reactor (or other method of maintaining levels) if you need it when the corals and stuff start using alkalinity. Spend your money on live rock instead.