I succesfully maintain a small reef systems a few years back and have just recently decided to revisit this passion. I enjoyed it a great deal and only wish I had access to this wonderful site back then. My question is this; has reef keeping changed since I was involved or dopeople on this site just chose a different method? When I was into reefing the popular setup was HUGE wet/dry filter, HUGE bags of activated carbon and if you wanted to get fancy a little bitty protein skimmer.lol. Now it seems protein skimmers have moved to the four front and wet/dry filters are a no-no. I have'nt even heard much about activated carbon use. I hope we are just perfecting our hobby and the new methods are more effective. I always had nitrate problems and along with it algea problems. Any way it is interesting to see the hobby progress in my absence.