hi there, going to be converting my Rio 180 to a Bracksih tank soon, and before anyone says anything, yes i am moving all the current occupents... it's going to home 3 archers and mabye some puffers, but just now it's just going to be the archers... now i was just wondering how long will it take ropughly for the salt, im adding 2tbls per gallon... now i know you can buy things like thermometres, that tell you the concentration of the salt... but can anyone tell me roughly how long, like a week, to turn 55galls of water brackish? thanks very much...