Years ago I used to buy a little bottle of blue liquid that would enter the bowl with each pump. I've checked and can not find it anywhere. Doing some research on line I found Sea Smart Marine which monitors the bay water coming into the head and dispenses the correct amount to sanitize the entire entry hose. It is self contained, battery monitoring system from the UK for about 160 pounds. Has anyone found the old small bottle that fit into the hose between the pump and bowl or used this Sea Smart Marine deodorizer or something else. I read a few posts about putting liquid into the bowl, but one of my partners is particularly sensitive to smell. (I've already done the H34 false bilge rebuild with eliminated all the water under the false bottom and eliminated the gallons of awful smelling liquid that built up over 30+ years.)