Algae-


My old biology prof still says that if you have light present it will aggravate the situation of algae, ask any aquarium hobbyist.
It may be that these folks are leaving a little fuel in the UAT and with the hatch off it starts the cycle for the algae to grow. It would be interesting to know if they have it in their fuel cans.

All I know is that we don't purchase special Jet fuel and we keep it out of the suns rays as much as possible and we don't have the problems.
Nuff said.
Marty O