[chandigz]

Questions are good. The only stupid questions are the ones you don't ask. Most of the people here "have been there, done that" and are giving advice from actual experience and know what works and what doesn't. What sort of worked 5-10 years ago is outdated and better ways have been created. Some things are the same with fresh and salt, some are not. You have to try to forget what you do with f/w and open your eyes to a new way of thinking. I have to agree with everyone else, forget the canister filter and use a skimmer. The only people who sometimes use only a canister filter instead of a skimmer are people with fish only tanks. The live rock will take care of your biological filtration. It also acts a source of denitrification(breakdown of nitrate into nitrogen gas by anerobic bacteria) . The protein skimmer is used to remove organic wastes from the water before it has a chance to turn into nitrate. One of Your goals in keeping a reef tank is to have a non existant nitrate level. Nitrate will cause major algae problems and interfear with coral growth and survival. Best peice of advise I can give you is take it slow, research(make sure its current)/ask questions, and do it right, it will cost you less in the long run and save a lot of headaches.