We're moving in the right direction! The third treatment I mixed the Interceptor in boiling water which completely dissolved the medicine. This technique speaks for itself because the first two treatments only took out the white bugs but not the black bugs. I added two large dog chewable tablets (23 mg) each of Interceptor for the 120 gallon and 2 tablets for the 160 gallon.
Before treatment
After treatment
Before treatment
After treatment