Over a period of about six months I burned out 4 circuit boards in my tank monitor system, I was told at the factory that they had some problems in the past with odor control causing this problem, pulled odor control fuse and had no problem since, I talked to different owners about tank additives and came up with a new product,it's called Sea-Zyme, the specs are Bacteria and Enzyme product, costs about $30.00 for 16oz container which should last a year, very interesting product, for more info contact Gary@ G & L RV Specialties 361 947 1192 or
rvfools@yahoo.com