How long should I let an ionizer run before varnishing? I saw Ross's post earlier on one and this weekend while out for a ride I stopped at a yard sale and low and behold a room ionizer for a $1. It has reusable filter you put into a dish washer for a 1/2 hour to clean it. My only concern is the output seems quite strong as to maybe stirring up dust off the cabinets on the initial startup. Plan on laying down the first coat of varnish tomorrow evening. Hopefully on the water by Saturday.