Student of goatology.
How do you clean this stuff or should I just buy new?
You need a ten gallon tank or larger. They are a lot easier to keep clean. I also vote to just rinse the gravel and put it back in. You don't need distilled water. Put tap water into a bowl and let it sit overnight to get rid of the chlorine and reach room temp. If there is chloramine in your water, you need a special fix from the pet store.