Contains a mix of 32 species
- Rhodopseudomonas sp – 7 species
- Thiobacillus – 4 species
- Pseudomonas – 5 species
- Alcaligenses – 1 species
- Citrobacter – 2 species
- Flavobacter – 2 species
- Nitrobacter – 3 species
- Nitrosomonas – 1 species
- Nitrococcus – 1 species
- Comamonas – 1 species
- Bacillus – 4 species
- Saccharomyces – 1 species