We have four leopard frogs in one tank and for three days now one has had an infection in one eye which appears to be a milky film that he can move up and down on his eye. We changed the water and it briefly went away only to return. We're leaving on a two week vacation in a few days and the frogs will be with an inexperienced frog sitter so I need a quick and easy remedy. Going to a vet isn't an option on this three day holiday weekend. All advice greatly appreciated!

Thanks!

mamafrog