at no time does this idiot mention the fact that pulution and preditors have an effect, a major effect on fish population and coral reefs. so if every hobbiest took down there aquriums, what do you do with the coral and fish? put them back in the ocean so preditors or pulution kills them. oh, by the way, sea world and every other city aquarium, your gone....this guy been sucking upto much outboard motor exhaust though his sorkel !!! (how many years have countries been dumping trash in the ocean along with all the oil spills?)