I just recently set up my 65 gallon reef tank. Now that it has been up and going for almost 2 weeks or so. I am starting to notice green algea all over the tank. I know someone said circulation has alot to do with it. but hell i can tell that there is for sure enough flow in the tank just from the way the fish swim around fighting the current. Is there any madicine i can put in the tank. I added some margarita snails and i noticed some of them died? what the heck? I have a refugium hooked up to this setup. would that have anything to do with it?