Refugium size

[TRIX]

I'm quite new as well. (so take me with a grain of salt). I don't think there would be much of a cycle time because you need the nutrients from the main tank to grow your macro's. If your planning on using new sand or rock there probably would be a bit of cycle. If that is the case depending on how you choose to set it up using water from your water changes would help speed up the process.