So i have a 90 gallon (been up and running for like 2 months...)with nothing in it and I've pick discus with some schooling fish! So about a week ago i went to my LFS and ask the worker how would i go about starting my tank. She gave me acid buffer to lower my ph to about 6.5 she said and this morning i did a test and saw it was a 6.7. So gave her a call and ask what was my next step she then told me i could go tomorrow and get my schooling fish and add them in and on sunday i could grab my discus. My question is does this sound right? Is there anything I'm missing?