if you haven't already, check out the reef2reef tank of the month for an example of a pretty simply run nano AIO, similar to your tank. in the post, he describes his methodology, his equipment, etc.
here's the link:
https://www.reef2reef.com/threads/r...brandon-mchenrys-amazing-aio-sps-reef.808947/
here's the link:
https://www.reef2reef.com/threads/r...brandon-mchenrys-amazing-aio-sps-reef.808947/