20 gal tall 130 wat 50/50 coralife light,35 pounds live roc,40 pounds of live sand,cpr reef ready skimmer,1 brain,1 bubble,1mushtoom,star pollops,1 hammer green (coral).Oh 1 clove pollop.Everything is doing great so far.My queston is that i am using a penguin 200 hang on filter. Is that ok? Or...