Formula 45F is a bacteria supplement for filamentous control

Formula 45F is a blend of adapted microorganisms that disfavors the proliferation of various filamentous organisms in aerobic wastewater treatment systems. It generates a dense, good-settling floc with excellent dewatering characteristics. For plants with severe filamentous bulking, this formula may be used in conjunction with chlorination, hypochlorite or peroxide programs.


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Formula 45F Features


  • Industrial strength

  • Packaged in convenient, ready-to-use 1/2-lb water-soluble pouches

  • Lives and reproduces in an environment containing no “free” or dissolved oxygen

  • Environmentally friendly

  • Available in 25-lb pail (Product# 143625)

Formula 45F Benefits


  • A blend of microorganisms that helps reduce the expansion of various filamentous organisms in aerobic wastewater treatment systems

  • Helps generates a dense, good-settling floc with excellent dewatering characteristics

  • Maximizes the performance of your biological wastewater treatment system

Using Formula 45F


Dosing Schedule:

Flow Rate Initial Dosage Maintenance
Up to 1,000 GPD ½ lb. per day for 3 days ½ lb. per week
Up to 5,000 GPD ½ lb. per day for 3 days 1 lb. per week
Up to 20,000 GPD 5 lbs.* 1 ½ lb. per week
Up to 50,000 GPD 8 lbs.* 2 lb. per week
Up to 250,000 GPD 15 lbs.* ¼lb. per day
Up to 500,00 GPD 25 lbs.* ½lb. per day
Up to 1 MGD 50 lbs.* 1 lb. per day
Up to 5 MGD 50 lbs. per MGD* 1 lb. per MGD per day
Up to 12 MGD 50 lbs. per MGD* ¾ lb. per MGD per day
Up to 100 MGDD 30 lbs. per MGD* ½ lb. per MGD per day

* Spread this initial dosage out over the course of 10 days.

* * Add as regularly as possible. If it is required to miss one day, add that day’s product with the next dosage.

Dosage rate will vary with flow rates, retention times and system variations.

Do not add to the treatment system at a location where toxic or otherwise adverse pH, dissolved oxygen or temperature conditions may exist at peak levels.


For optimal results the wastewater and treatment system should meet the following conditions:

Optimum Minimum
Influent pH 7.0 5.0
Dissolved oxygen, ppm 2.0+ 1.0+
C/N/P ratio 100/10/1 100/5/1
Temperature 30°C (86°F) 10°C (50°F)
Toxic metals, ppm
(E.g., hex., chromium)
0 0

Storage and Handling

Storage: Store in a cool, dry place

Handling: Wash hands thoroughly with warm, soapy water after handling

See label and SDS for safety information.



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