Brightwell Aquatics MicroBacter Purple M
Brightwell Aquatics MicroBacter Purple M
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Brightwell Aquatics MicroBacter Purple M is an innovative addition to the MicroBacter line, designed to enhance biological filtration and nutrient management in reef, marine, and freshwater aquariums. This powerful formula harnesses the unique capabilities of Purple Non-Sulfur Bacteria (PNS), a diverse, shelf-stable blend of live photosynthetic bacteria that excels in nutrient cycling. MicroBacter Purple M works synergistically with products like MicroBacter 7 and MicroBacter Clean to break down organic waste, improving water clarity and supporting a thriving aquatic ecosystem. Its dual aerobic and anaerobic functionality makes it ideal for use in deep sand beds, refugiums, media reactors, and main displays, where it facilitates both denitrification and oxygen-based biological processes. Beyond waste management, it provides a natural food source for corals, promoting their health and vitality. Made in the USA by Brightwell Aquatics, a trusted leader in aquatic care, MicroBacter Purple M is a versatile solution for aquarists seeking a balanced, clean, and vibrant aquarium environment.
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Live Beneficial Bacteria – Advanced Purple Non-Sulfur Bacteria (PNSB) supplement that enhances natural nutrient cycling, supports biological filtration, and improves overall water clarity in marine & reef aquariums.
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Dual Aerobic & Anaerobic Function – Effective in deep sand beds, refugiums, media reactors, and main displays, supporting both denitrifying and aerobic bacteria populations.
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Optimized for Nutrient Control – Aids in the reduction of detritus, excess nutrients, and organic waste, creating a cleaner and healthier aquarium environment.
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Natural Food Source for Corals & Plants – Provides a sustainable, nutritious food source for corals, sponges, and other filter-feeding invertebrates, supporting healthy growth and vibrant coloration
- No Refrigeration Required - MicroBacter Purple M is a shelf stable bacteria that requires no refrigeration

I have a well established and heavily stocked reef tank that has been running for 18 years. Life was very busy and I neglected the tank over the past few months...things got really messy (rocks and sand full of detritus).
I decided to try this after reading some good reviews online. Results are not immediate, but now at almost 3 weeks of dosing daily the water is crystal clear and the sand bed is incredibly clean (so much so that my wife and kids have asked me if I put in new sand in the tank).
When I first read about this product I was very skeptical but I am now I convert. It definitely worked for me.