Hello, i am new to this forum, and i am setting up a new tank again, i hope that you guys can help me through the rough spots. i have a 65 gal tank and i first set it up in feb 05 and was going strong untill i introduced a blue tang into the tank and inside of a week all my fish had died. well i was very depressed about this and left my tank empty for about 4 months. well i am now ready to try again. i would like to avoid the last diszaster that i had. I have conditioned the water and got the selenity correct. i have done some inital tests and have found no ammonia, nitrates or nitrites. my ph is a little low about 8.0 - 8.1 i saw somewhere i could use baking soda to bring the ph up, Is this a safe practice ?