I think you made a very good unselfish decision here. I suggest you get all the stuff you need drain the tank and fill it back up with marine salt. Once you get the salt right follow the instructions in my sig below for a fishless cycle.
will do, i want to make everything perfect for the next fish, the person is coming to pick up the little guy now, to his new home. Saturday is when i will do everything (just letting you know) i will be doing a full water change, new water with MARINE salt, adding stress zyme, and water conditioner along with washing all plants and gravel (no soap of course) and doing multiple water tests for my next fish which i wont be getting until i know my tank is perfect
thank you for everything!