Brown Cyano Or dreaded Dino or what?!?

Cyano is fortunately fairly easy to deal with most of the time...as mentioned above, it relies on excess nutrients in the system...feed less, feed high quality frozen foods that have been thawed and rinsed, increase water change size/frequency, increase filtration/skimming...it sounds very simple, but you basically have to either decrease the input of nutrients or increase the export...or most likely some combo of both...get the nutrients in check and the cyano will clear up.