If you have plastic plants, little statues, etc. that "algae-up" and you want to get rid of it: [b]Take out the item, allow it to dry, let it set out in the air a couple of days, and put it back in position.[/b] The algae dies without the water, and a day or so after you put the item back into the aquarium it looks clean and crisp! Sweeeeeeet!!