Use the thickest wall tank you  can find, this can delay the odor seeping
out.  I had no oder for the first year or so and then it was pretty bad.  I
flushed with fresh water and never allowed # 2 in the tank and it still got
me.
Scott
"Roger Long"  wrote in message
...
 Ah, I see you are in fresh water.
 In salt water, it is the head itself that stinks.  Different kinds of
 bugs and chemistry.
 There is simple and there is simple.  Kneeling down in the head
 compartment to scrub and clean the thing isn't simple in my book.
 This set up will get fresh water and deodorant anywhere the water
 goes.
 As for the tank, sure, you can just dump the stuff in the bowl but
 that doesn't get it where it is needed.
 --
 Roger Long
  wrote in message
   ups.com...
  Roger:
 
  I would advise sticking to the KISS principle.
 
  I presume you are equipped with a holding tank. As long as your VENT
  IS
  CLEAR, your hoses are reasonably new and your connections are
  caulked
  and tight, you won't have odour.
 
  And far simpler way to add deodorizer is to flush it through the
  head.
 
  Gary MacDonald
  Kingston, ON
  http://home.ca.inter.net/~gkmd/sail/CarpeDiem.htm
 
 
  Roger Long wrote:
  One of the things I'm not looking forward to about sailing is head
  odor, especially in a boat where we'll be sleeping on top of the
  holding tank. I'm thinking of setting up an arrangement like this:
 
  I'll put a tee with a valve into the head intake line just upstream
  from the seacock. This will run to a plastic tank of two to five
  gallons with a large diameter screw top and a hose with valve
  nearby
  running to the fresh water system. Throw the deodorizer of your
  choice
  into the tank and fill it with fresh water. Last flush of the day,
  switch the head over to the tank so that fresh water and deodorizer
  runs through everything. I wouldn't hard pipe the tank to the FW
  system because there needs to be an airgap between it and any
  possible
  connection to sewage.
 
  Obviously not a solution for long distance cruising where fresh
  water
 
  supply is an issue but, if you're doing that, you've probably
  gotten
  used to odor.
 
 
  --
 
 
  Roger Long