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Formula 45F
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Filamentous organisms can pose significant challenges in aerobic wastewater treatment systems, leading to sludge bulking, foaming, reduced treatment efficiency, and increased sludge volume index (SVI).
Formula 45F is a specialized blend of microorganisms designed to minimize the buildup of filamentous organisms in these systems. It promotes the formation of dense, well-settling floc with exceptional dewatering properties. In cases of severe filamentous bulking, Formula 45F can be used alongside chemical treatments for enhanced results.

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Formula 45F Features
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Industrial strength
Formulated for difficult problems and professional use.
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Convenient packaging
Ready-to-use, ½‑lb water‑soluble pouches.
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High-performance microorganisms
Specially selected for bioaugmentation in treatment plants.
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Comprehensive formulation
Includes surface tension depressants, micronutrients, growth stimulants, broad-spectrum enzyme systems, and penetrants alongside microorganisms.
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Anaerobic capability
Thrives and reproduces in environments with no free or dissolved oxygen.
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Eco-friendly solution
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Available in 25‑lb pails
Formula 45F Benefits
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Reduces filamentous organism growth
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Promotes dense, well-settling floc
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Enhances treatment performance
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Helps maintain stable operations
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Potential to reduce maintenance costs
Using Formula 45F
Dosing Schedule:
Flow Rate | Initial Dosage | Maintenance |
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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.* | ¼ lb. per day |
Up to 500,000 GPD | 25 lbs.* | ½ lb. 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 MGD | 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 a day is missed, 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 adverse pH, dissolved oxygen, or temperature conditions exist at peak levels.
For optimal results the wastewater and treatment system should meet the following conditions:
Optimum | Minimum | |
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Influent pH | 7.0 | 5.0 |
Dissolved Oxygen (ppm) | 2.0+ | 1.0+ |
C/N/P Ratio | 100/10/1 | 100/5/1 |
Temperature (°C) | 30° (86°F) | 10° (50°F) |
Toxic Metals (ppm) | 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.