My leachig pit was completely full (above the inlet pipe). As recommended, I took a long 2 x 4 with angle irons projecting off the end, and drove the angle irons into the bottom of the pit and twisted to disturb as much of the bottom area as I could. I put one gallon of arcan in and 3 days later checked the water level. It had dropped 6 feet to a depth of 1 foot. I put an additional gallon of arcan in. Do I need to continue with the treatment or just monitor the water level and add as needed?