VETUS Tankfresh Aerobic Bio Waste Tank Additive 6 X 500Ml

Unlike other (chemical) products that often mask the smell, With
regular small doses, TankFresh builds up the natural bacteria level
in the holding tank.

TankFresh Features

• Powerful concentrate in a convenient 500 ml dosage bottle.
• One bottle is sufficient to banish odours for an entire boating
  season.
• Completely organic, so only natures own ingredients.
• Proven reduction of odours in the tank.
• Includes a guide to an odourless wastewater system.