What are the main contributing factors in a Cyno outbreak? Fix?

[marie]

Cyano is definitely phosphate driven, if your phosphates are higher then usual then a new bulb will just make it worse. Moving could have released the phosphates from your rock and sand.

Are you running any phosphate removers? If not, now would be a time to start. Increasing the flow where cyano seems to settle will help as well and of course doing that good old standby...lots of water changes