MicroBacter Purple M - FAQ

Created by Adam Clayton, Modified on Thu, 9 Apr at 10:38 AM by Nathan Haller

MicroBacter Purple M


What is MicroBacter Purple M?

MicroBacter Purple M is a live bacterial supplement designed for marine and reef aquariums. It contains a blend of purple non-sulfur bacteria (PNSB) and other beneficial microbes that help improve water quality and overall tank health.

What does MicroBacter Purple M do?

It helps:

  • Reduce unwanted nutrients (like ammonia, nitrate, and phosphate)
  • Improve water clarity
  • Break down organic waste (uneaten food, detritus)
  • Support a healthier aquarium ecosystem

Why isn’t the product purple in the bottle?

Although it contains “purple” bacteria, the liquid may appear cream or tan. This is due to how the bacteria are cultured and is completely normal.

What types of bacteria are included?

The product contains a complex system of non-pathogenic aerobic and anaerobic microbes, including Rhodopseudomonas palustris (a purple non-sulfur bacteria).

How does it improve nutrient control?

MicroBacter Purple M enhances:

  • Nitrification (conversion of ammonia → nitrite → nitrate)
  • Denitrification (removal of nitrate)
  • Organic waste degradation
    This leads to more complete nutrient cycling in the aquarium.

Is it safe for aquarium inhabitants?

Yes. The bacteria are non-pathogenic and reef-safe, making the product suitable for fish, corals, and other marine life.

Does it provide any benefits to corals?

Yes. It can:

  • Provide a natural food source for corals and filter feeders
  • Support coral growth and coloration
  • Help maintain a balanced ecosystem

Is the bacteria live or dormant?

The product is supplied as live bacteria in suspension, ensuring maximum effectiveness.

Where in the aquarium does it work?

It functions throughout the system, including:

  • Display tank
  • Rockwork
  • Substrate (sand beds)
  • Refugiums and filtration systems

Does it work in both oxygen-rich and low-oxygen areas?

Yes. It contains both aerobic and anaerobic bacteria, allowing it to function in different zones of the aquarium.

Can it be used with other bacterial products?

Yes. It can be used alongside other biological filtration products to broaden microbial diversity and effectiveness.

What type of aquariums is it for?

It is designed for marine aquariums and reef tanks.

Does it require refrigeration?

No. The formulation is shelf-stable and does not require refrigeration.

How does it help with waste in the tank?

It converts uneaten food, organic debris, and detritus into usable nutrients, helping maintain a cleaner, healthier environment.

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