I believe there are some posts that you can search for about the red algea, but it can be caused by using tap water. I have seen red slime algea killers...but i'm not recommending them to you cuz i've never used them and really don't know how they perform. I think some ways it can be reduce is running your lights a little less and feeding a little less...I've def. read a whole thread on it once though so you ough to try a search for it.
But it looks like you're off to a good start.