Originally Posted by Enconcapt
Look up the GEO method. You use water softener and detergent instead of store bought stuff. It really cleans and keeps stuff from sticking.
X2. I haven't had a problem since I went to this method. The only time my black tank is dry is after I winterize my unit.
After I dump I add 1/2 cup Calgon, 1/2 cup dollar store plane liquid laundry detergent in 5 gallons of water to the black tank. Here K-Mart carries Calgon. 1 box last a season for us.
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