I was wondering if there is a Utric that I can grow on the "top soil" in my cp pots. I hate algae and would like to grow something on the surface to cover that up. The cool moss that seems to turn up in every single cp pot is nice, but takes too long to grow. I can't remember which one D'amato mentioned, but he says it becomes a weed, like capensis. Would that work? If not a Utric, what else can I grow on the surface?