Photosynthetic Bacteria PSB

PSB (Photosynthetic Bacteria) are beneficial microorganisms widely used by Japanese medaka breeders to help maintain healthy ponds and breeding tubs. These natural bacteria help break down organic waste, improve water conditions, and support the growth of micro-organisms that young medaka can feed on.

Regular use of PSB helps create a more stable and natural environment for both adult fish and fry. Many breeders add PSB to outdoor tubs and ponds to encourage a balanced ecosystem and clearer, healthier water.

Why breeders use PSB:

• Supports natural biological balance

• Helps break down waste and uneaten food

• Encourages micro-life for fry to graze on

• Helps maintain healthier breeding water

A simple addition inspired by traditional Japanese medaka keeping methods. 🐟

I have imported genuine (and very smelly) PSB directly from a Japanese manufacturer / retailer in order to sell in very limited quantities. PSB can be cultured under strong lighting and with the right nutrients. If you wish to increase volume of the culture then I can supply genuine imported Ebios tablets at an additional cost. 

Please make sure that you research PSB before you add it to your aquariums / tanks / tubs / ponds etc

Please see our advice and care information section for using Photosynthetic Bacteria (PSB). Click here