Single 32-ounce bottle of biological holding tank treatment using natural nitrate compounds for waste breakdown and odour elimination. Formaldehyde-free and fragrance-free, making it safe for all tank types and chemically sensitive users. Each 4-ounce application treats 40 gallons of capacity, yielding up to eight full treatments per bottle. Biodegradable and suitable for RV and marine use.

• Biological formula, formaldehyde-free
• Natural nitrate compounds
• One 32-ounce bottle per order
• 4-ounce dose treats 40 gallons
• Unscented, fragrance-free