I know that everyone on this forum probably gets sick and tired of boat odor questions but if you all could send me some quick advice I promise not to wear you out. Now I have said all that here is my problem...

I have a new holding tank and lines in my houseboat. It is a 70 gallon tank and it is used a lot. I have a family of four with 2 small children so we are constantly pumping out.

I used Kronin four my first year with pretty good luck but then started to get a smell on the outside of the boat when it was flushed. One.. the Kronin is expensive when you are pumping out once a week and also I am curios if Kronin has time to do what it needs to do when I have to empty the tank once a week.

I put the sweet tank system in my dads boat about 10 years ago and it works wonders. That is what I would like to do soon. But until then I need to make sure I am using the right treatment.

I regretfully began using a product called TST. It works ok but is nothing but a mask. On one of my older boats I had used Odorlos and it worked great!

I have found someone here locally that carries odorlos and I want to start using it again.

So here is the question... Do I have to go to extremes to clean out the TST that has been in the tank before I start using Odorlos again?

Any input would be greatly appreciated!
Phogan
P.S ventalation seems to be adequate.