I am glad you enjoyed the pics but I am somewhat of a novice reef keeper. While I have been keeping tanks for years, my reef is only 8 months old. Your best bet would be to post threads in the Saltwater and Reef Aquaria Getting Started forum. There are lots of folks much more knowledgeable than I that will be able to answer just about any question you may have.
4 months old is not awhile. The usual recommendation is to wait at least a year and some would argue it takes 2 years for a reef system to become stable, mature, and balanced. Saying you had it awhile is a bit of a stretch if you have only had the tank 4 months. There are members here who have kept fish and other animals alive for 2 decades in their reef tanks.