Okay so this is my first salt water tank and I've read mixed reviews on this so I figured I would ask for all of your input/opinions on this topic. I just started cycling my tank fishless, I do have about 60lbs of dry rock in tank and 40lbs of live sand. I also added a bottle of Bio-Spira to help the process cause i was unsure if I was gonna add a hardy fish to help with this process. Do you guys recommend doing water changes while cycling or leave it alone and just top of water during this process?