My turkey baster is the main tool I use, I use it to feed, stream water to the rocks, extract unwanted items in tank, retrieve frags that fell behind rockwork, etc. That thing is like my arm in the tank.
As far as blowing off the rocks, prolly once a week.
How would blowing Detritus of your rocks remove bacteria or Pods? Your not removing them from the tank. Basically your just getting flow to areas your pump/powerheads can't reach effectively.Never. It's live rock I wouldn't want to be removing any any of the beneficial bacteria or pods.