Ok over the last week I was getting worried Im hosting a club meeting saturday and this week I recieved an algae bloom did not know what I was going to do. It has been brought to my attenion that Im am going to do nothing about it I thought something was wierd when I started to notice the way the algae looks not like your typical algae at all then today I researched and found this in a coralline propagtion website: "The initial growth will appear as a lime green coating. After about three months you will see your rocks turn pink, then purple. Naturally, the degree of coloration will vary from tank to tank." so I am ok now.