VETUS Tankfresh Aerobic Bio Waste Tank Additive 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.