ya when i did a tank swap, i put all new sw in! However i used the same filter sponges from the old tank to keep most of the good bacteria going! I agree with krish that the bacteria isnt in the water but is in the rock, sand, and filter!
Sounds like u are just using rock and turf scruber and a skimmer of course... huh seth? Should have been np! Maybe the all new elements in the water where the cause but like u said we have no idea or way of finding that out...this hobby is such a bloody mystery sometimes.
It would have been such a slight change in water chemistry though...sps dont like change just like most coral but prob more so....:crazy: