• Winter and Spring water treatment for nutrient control and biological filtration maintenance

  • May be used in winter and spring to maintain optimal biological filtration potential during periods when plant growth is slower

  • Encourages the growth of desirable plants, discourages algae, improves water clarity, decreases pond odor, and encourages a cleaner bottom substrate


    Increases dissolved oxygen concentration in water, and reduces hydrogen sulfide production


  • FlorinBac-W is a suspension of non-pathogenic aerobic and anaerobic microbes, as well as natural enzymes, specifically formulated to reduce the fish waste and decaying plant tissue in cold water (≤60° F or 16° C). These microbes are provided in a state of suspended animation for maximum longevity.

  • Shake product well before using. Store indoors in a cool location; refrigeration will prolong effectiveness of product but is not necessary. If product freezes, allow to come to room temperature on it’s own. For best results, turn UV-sterilization and/or ozonation off for a period of 2 hours following addition to pond.

    General Usage: Use this product at the onset of winter weather, then continue use through mid- to late-spring; switch to FlorinBac-S at that time. Dose 10 ml (2 capfuls) per 50 US-gallons (189 L) of pond water daily for the first two weeks of use. Thereafter, dose 5 ml (1 capful) of FlorinBac-W per 50 US-gallons every two to three days; alternately, and for best results, add 1 capful per 100 US-gallons (379 L) daily. Dosage may be adjusted according to perceived benefit to pond.

    When adding fish or plants to pond: Dose 1 capful per 50 US-gallons (189 L) daily for one week, then resume appropriate dosage as nitrate and phosphate concentrations dictate.

    Caution: Keep out of reach of children. Not for human consumption.