Will have to wait till my husband is home to test the water(it's difficult with a 1yr old hanging off me) a few of the guppy seem to hang near the surface, but no gasping. As for the spots, they do appear to be slightly fuzzy but fairly transparent, with the slightest tint of white. One of my Rasboras also seems to have grown a tiny little beard.
Everyone really is acting completely normal, even the cory with the most spots on him. Also, just in case it helps, I have not noticed any fin damage or reddness/wounds on anyone.
Water quality did get quite bad while the power was out, but we have done 2 50% water changes since getting power back. But the cory have continued to get worse.