WHATS THE BEST FILTRATION TO USE FOR A SMALL MARINE TANK. I MEAN SMALL 1M BY 450 BY 500. I WAS THINKING LIVE ROCK AND A GOOD PROTEIN SKIMMER. CLASSIC BERLIN SYSTEM BUT IV HEARD THERE SOME NITRATE FILTER GADGET THAT ALLOWS YOU TO KEEP MORE FISH THAN YOU SHOULD. HOW MUCH LIVE ROCK SHOULD BE USED.:yeahdude: