OP You can try this method to identify wether it is in fact dinos or not
https://www.reef2reef.com/threads/helpful-method-for-identifying-dinoflagellates.216508/
As for cyano, as many suggested - you need to slightly increase your nitrates. I recommend feeding heavier because dosing nitrate would result in faster consumption of phosphates which may in turn bottom out.
https://www.reef2reef.com/threads/helpful-method-for-identifying-dinoflagellates.216508/
As for cyano, as many suggested - you need to slightly increase your nitrates. I recommend feeding heavier because dosing nitrate would result in faster consumption of phosphates which may in turn bottom out.