PSB 500ml x 2 bottles

PSB stands for Photosynthetic Bacteria, a microorganism widely found in nature. This product is a cultured form of PSB.

Examples of PSB usage include:
- Water quality improvement
- Food for fry and baby shrimp
- Food for daphnia and paramecia

Please note that PSB has a unique odor, so we recommend opening the package in a well-ventilated area.

We will ship two 500ml drink pouches containing PSB.