ok. well yea man. relax lol. its only been two days and you want to add stuff. well my tank cycled in a week because i used cured lr and ls. plus my fuge. but you are starting brand new. yea chaeto will help. but ask you friend to give you a cured lr to help you out to cycle your tank. it will help. and you dont need to do a water change. forget that. keep waiting