Beneficial Bacteria – Custom B5

 Beneficial Bacteria and Soil Amendment

Improve your Garden Soil!

beneficial bacteria
Concentrated Liquid Probiotic and Biofertilizer

The beneficial bacteria in Custom B5™are highly concentrated and a microbial soil amendment product. B5 is designed to improve soil conditions, improving both soils for gardening and soils for farming.

Here’s some great new videos that show the advantages of using beneficial bacteria.

Grow bigger, better plants. Use Custom B5! Use Biofertilizers like !

Custom B5 improves Soil Conditions

Custom B5™ contains 5 specifically selected species of beneficial soil bacteria including Bacillus subtilis.

Buy Custom B5 Now

Free Shipping and FREE International SHIPPING

The root system is the gateway to growing bigger, healthier plants. Custom B5™, biological soil amendment, helps plants grow healthier root systems and bigger and better plants.

Here’s some great new videos that show the advantages of using beneficial soil bacteria.

The Beneficial Bacteria of Custom B5

Custom B5™ contains 5 specifically selected species of beneficial soil bacteria. These beneficial microbes and soil probiotic have been selected because of their enhanced ability to:

  • Decompose organic matter to create extra nutrition for your plants.
  • Grow bigger, healthier root system enabling the plant to grow larger and more abundant fruits or vegetables.
  • Help produce plant hormones
  • Restore Biotic Balance
  • Process nutrients more effectively
  • Replace beneficial bacteria lost to drought, flooding or freezing.

Custom B5™ is a highly concentrated, liquid microbial product manufactured and distributed by Custom Biologicals.

Custom B5™ contains the following beneficial soil bacteria:

  • Bacillus subtilis
  • Bacillus laterosporus
  • Bacillus licheniformus
  • Bacillus megaterium
  • Bacillus pumilus

Custom B5 is available in two convenient sizes; 50ml and 1 Liter. The 50 ml size contains enough beneficial soil microbes to treat 2.5 acres (1 Hectare). The 1 liter size will treat 50 acres (20 Hectares).

Custom B5 can be purchased in our online store.

Distributor and dealer inquires, both domestic and international, are welcome. 

Custom B5 is also available as a fast dissolving fizzytab. B5 Fizzytabs, an effervescent tablet, contains the same beneficial soil bacteria, but in a easy-to-use fertilizer tablet. Each fizzy tablet treats 1/4 acre and can be applied as a seed treatment, or after the plant has germinated.

Custom Biologicals, Inc. manufactures a wide variety of biological products including products for soil amendment. Contact Custom at (561) 797-3008 or via email at

Microbial soil amendments are sometimes called biofertilizers, biological soil amendments, biostimulants, or beneficial microbe treatments. This product is useful for home and lawn care, gardening, as well as for commercial farms.

We’re always looking for new distributors, both domestic and international.