well today i was doing a water change and normally my aro just stays to the side that im not working in. well today when i was filing it back up he was swimming around. i had the first part of the glass lid up because i was trying to get some of the white hase off the surface of the water. i turned around to get another paper towel and BAM!!!! he was on the floor!! so i quickly grabbed a shirt that was on the floor and picked him up in put him back in the tank. but after like 5min all this stuff stated to come off him and flotting around. what is that stuff? and will he be ok? he was only out for maybe 15 seconds or so.