I've now got loads of algae appearing in my maturing tank, is this normal and will it settle down? I have the lights on 12 hours a day for the living rock and algae has grown all over the substrate and the front glass as well as on some of the rock.
PFK has a review of external filters this month, the fluval has some very good features, but the eheim on test is a more basic one. I would go for size and ease of use. Fluval have served me well for years, but I don't know much about eheim.