Why Use Photosynthetic Bacteria (PSB) for Fish Fry?

Photosynthetic bacteria (PSB) are a powerful natural supplement for fish fry. They provide essential nutrients while also purifying the water, making them an ideal choice for healthier, faster-growing fry.

• Nutrient-Rich Diet: PSB provide proteins, amino acids, and vitamins essential for the growth and development of fish fry.
• Enhanced Digestibility: PSB improve gut microbiota in fry, resulting in better digestion and nutrient absorption.
• Boosted Immune System: Bioactive compounds from PSB strengthen immunity and disease resistance.
• Improved Survival Rates: Healthier and more resilient fry have a better chance of survival.
• Cleaner Environment: PSB break down organic waste, reduce harmful substances, and inhibit pathogen growth.

Incorporating photosynthetic bacteria (PSB) into your fry’s diet promotes healthier growth and cleaner aquariums.

Product Information

Available in two sizes, now packaged in recycled PET bottles to prevent leakage during shipping.
PSB thrive in sunlight—simply leave the bottle outdoors in full sun.

• • 12 oz
• • 36 oz

⚠️ Disclaimer: Photosynthetic bacteria (PSB) can produce a strong odor, often resembling rotten eggs. This is caused by natural sulfur compounds like hydrogen sulfide (H₂S) and is completely normal.

👉 Want to learn more? Read our full PSB blog post here.

Frequently Asked Questions