+1
I can grow in tanks even when the param's are good. Cyano is an ancient form of bacteria that can live in the most extreme places and thrive. As already stated, it tends to grow in places where the flow is low, and even in high-flow areas if the nutrients are high. Manually remove it daily with a turkey baster or flexible tubing in between water changes. I know it's a new tank but did you buy a new or used light? Old bulbs begin to emit a yellow spectrum that can fuel cyano (and algae.)
