Sounds good Ellena!
Just for future reference, when you're fishless cycling there's not much meaning to doing "percentage" water changes unless you have a logistic reason. Holding the change to some percentage is all about protecting the fish from some perceived shock and of course.. you have not fish! So, my own practical limit used to be lowering the water just until it would have made the cannister filter intake lose its siphon (I nearly always leave my cannister filter running during water changes, just out of laziness, and I kind of like hearing the waterfall noise from the spraybar while I'm doing maintenance!) Anyway, usually you are trying to accomplish something with that fresh tap water and refreshing 90% of the water usually accomplishes more of it than 50%.. but I realize you may just have not wanted to take that much time of course.
~~waterdrop~~