Polyplab Genesis Bacterial Blendis a 50 mL concentrated bottle of dormant marine bacteria — over80 billion cells/mL— engineered to cycle new reef tanks, supercharge biofilm formation, and provide a rich planktonic food source for corals, zooplankton, and filter feeders. A few drops a day is all most reef systems need to keep the biological filter humming. Pairs perfectly with the PolypLab Genesis Rock Booster Set, and stocks alongside our other reef-care products in Maintenance & Water Care and Additives & Supplements.
Why This Bacteria
- Custom multi-strain blend— engineered with a Canadian biotech firm to combine nitrifying, denitrifying, and biofilm-forming bacteria in one bottle.
- 80 billion cells per mL— one of the most concentrated reef bacteria products on the market.
- Dormant on the shelf— bacteria activate when added to your aquarium, so you get a long shelf life and full potency in every drop.
- Coral & filter-feeder food— in their planktonic state these bacteria become a highly nutritious food source for SPS, LPS, soft corals, and zooplankton.
- Cycle a new tank, faster— ramps up biological filtration during cycling so you can move livestock in sooner.
- Reef-safe— will not harm fish, corals, or invertebrates when used as directed.
How to Dose
- Established reef system:1 drop per 5 gallons of total system water volume, daily.
- Cycling a new system:4 drops per 20 gallons daily for the first two weeks, then taper to the established maintenance dose.
- Pairing with Genesis Rock:Soak the ceramic blocks in a container of saltwater dosed with Genesis bacteria for 12+ hours before placing them in your sump or display.
- Where to dose:Add directly to a high-flow area of the sump or display so bacteria mix evenly across the system.
Specifications
| Brand | PolypLab |
| Product | Genesis Bacterial Blend |
| Bottle Size | 50 mL dropper bottle |
| Concentration | 80+ billion bacterial cells per mL |
| Bacterial Form | Custom planktonic multi-strain blend, dormant |
| Use With | Saltwater & reef aquariums |
| Established Dose | 1 drop / 5 gallons daily |
| Cycling Dose | 4 drops / 20 gallons daily for 2 weeks |
| Reef Safe | Yes — safe for fish, corals, and invertebrates |
Recommended Pairings
- PolypLab Genesis Rock Booster Set — ceramic bio-media blocks designed to be seeded with this exact bacteria.
- Brightwell MicroBacter7 — complementary nitrifying bacteria for ongoing biofilter support.
- Water Test Kits — track ammonia, nitrite, and nitrate as the bacteria establish in your system.
- Saltwater Refractometer — nail your salinity before adding bacteria during cycling.
- Saltwater Collection — browse the rest of our reef essentials.
FAQ
Can I use Genesis to cycle a brand-new saltwater tank?
Yes. Dose 4 drops per 20 gallons daily for the first two weeks while monitoring ammonia and nitrite. Once parameters are stable, transition to the maintenance dose of 1 drop per 5 gallons.
Will my corals eat the bacteria?
Many do. In their planktonic state these dormant bacteria are an excellent food source for SPS, LPS, soft corals, and other filter feeders — one reason reefkeepers dose bacterial blends even on fully-cycled tanks.
Do I need to refrigerate the bottle?
No. The bacteria are dormant and shelf-stable at room temperature. Keep the bottle out of direct sunlight and tightly capped between doses.
How long does a 50 mL bottle last?
On a 50-gallon reef at the maintenance dose (10 drops/day ≈ 0.5 mL), a 50 mL bottle lasts roughly 100 days. Larger systems and cycling tanks consume the bottle faster.
Is it safe with fish, inverts, and corals?
Yes — Genesis is fully reef-safe at recommended doses. No effect on livestock when used as directed.
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