i have two ultrasonic tanks. most of the time i use pine-sol and water. Big zip lock bag, put the carb in, then fill the bag with pine sol and water and seal the bag dirty water stays in the bag and keeps your tank clean. keeping it in the bag you can adjust the mix. do not use citrus based cleaners on aluminum.


lots of different stuff on the net for stuff to use. i have had great results with pine sol and its cheap.