Photosynthetic Bacteria (PSB): Benefits for Medaka Tubs and Aquariums
Photosynthetic Bacteria (PSB) are unique microorganisms that can support water quality, improve microbial balance, and help keep medaka setups more stable.
Photosynthetic Bacteria (PSB) are a fascinating type of microorganisms. They convert light into chemical energy using pigments such as bacteriochlorophyll. Unlike plant-based photosynthesis, PSBs do not release oxygen and do not need water as an electron donor.
These microorganisms live in places like soil, lakes, and aquariums, and they’re often described as some of the oldest life forms on Earth. Research has shown that certain PSBs can use compounds like sulfur and hydrogen while processing carbon dioxide. (Source)
Types of PSB
- Chlorobiaceae: Green sulfur bacteria that use sulfides as electron donors.
- Chromatiaceae: Purple sulfur bacteria that thrive in anaerobic, sulfur-rich conditions.
- Rhodospirillaceae: Purple non-sulfur bacteria that are highly adaptive in various environments.
- Chloroflexaceae: Green non-sulfur bacteria with flexible metabolism.
Benefits of PSB for Medaka and Aquariums
Adding PSB to your medaka tub can bring several practical benefits, especially in outdoor tubs or systems that experience frequent feeding and waste buildup. Many keepers use PSB to support overall stability by improving microbial balance and helping keep water conditions more consistent.
- Supports microbial balance in the water
- Helps reduce unpleasant odors in some setups
- Can be helpful during early setup stages or after disturbances
- Often used alongside other beneficial bacteria
Tip: PSB is commonly paired with other beneficial bacteria (such as Bacillus-based products) to support a more balanced ecosystem, especially when a tank or tub is newly set up.
Applications Beyond Aquariums
PSBs are also used in a variety of industries and environmental settings:
- Odor reduction in animal farming
- Wastewater treatment in multiple industries
- Soil improvement and crop support in agriculture
- Carbon capture applications to help reduce greenhouse gases
PSBs can also produce useful compounds such as Coenzyme Q10, carotenoids, polyphosphates, and PHB. These have applications in areas like medicine, cosmetics, and agriculture.
