Hi, we are new to this site. We are having a bit of a problem with algie bloom alreay this spring. The Pond is four years old and is aproxmitly 13 feet deep. The algie seems to be growing all around the edge about 5 feet down. We would like to put an end to it before it gets to far out of our control. We have been keeping the water darkend with aqua shade but its not helping much this year. The pond is also stocked with rainbows & triplods and we don't want to harm them. We would love to get some advice from anyone on this matter. Thanks, Chris & Wendy