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|  |  | |  |  | Septo Air Biological Media 1 kg£21.21 - Biological media and bacteria for Hydra Septo-Air conversion units
- Combination organic media for bacteria to colonise, 12 different bacteria strains
- Natural media can go to treatment plant renew when system is pumped
- Shelf life 2 years, 1 kilo treats small system
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