Jeff,just now read your post. Even out of my clean pond,I keep the snappers for at least a week in a 55 gal.drum and change the water every other day.They migrate between ponds so there is no telling where they came from;could be from that algae covered pond back my road! As for cleaning,the air hose never worked for me,so I use a snap off blade utility knife.As soon as it's dull,snap it off.