- Sku: R29000
- Vendor: Red Sea
Prodibio BioDigest
The Prodibio BioDigest is a concentrated blend of live nitrifying and denitrifying bacteria that runs the entire nitrogen cycle in your aquarium. Many complementary strains work together to break down fish waste, convert ammonia and nitrite, and drive nitrate and phosphate down toward zero in both freshwater and saltwater systems. It is Prodibio's flagship bacteria, equally at home cycling a brand-new tank or keeping an established one clean and stable. Pair it with the rest of our additives and supplements.
How It Works
A healthy aquarium depends on a deep, diverse bacteria colony living in your filter, rock, and substrate. BioDigest seeds that colony with a wide mix of heterotrophic and autotrophic strains. The first strains begin breaking down organic waste and converting ammonia, while others complete the chain all the way to nitrogen gas, which leaves the water naturally. Because the blend also consumes nitrate and phosphate, regular dosing keeps nutrients low, water clear, and filamentous algae in check. To speed up purification you do not increase the dose, you simply dose more often.
Features
Choose Your Size
Every pack is the same BioDigest ampoules, just different quantities. Pick based on your tank size and how long you want a supply on hand.
| Pack | 6 Vials | 12 Vials | 30 Vials |
|---|---|---|---|
| Ampoules | 6 | 12 | 30 |
| Each ampoule treats | Up to 250 gal | Up to 250 gal | Up to 250 gal |
| Maintenance doses | 6 | 12 | 30 |
| Best for | One tank, single cycle | One tank, longer supply | Large or multiple tanks, best value |
| SKU | R29000 | R29001 | R29002 |
Specifications
| Specification | Detail |
|---|---|
| Product | Prodibio BioDigest live bacteria |
| Contents | Concentrated nitrifying and denitrifying bacteria strains |
| Function | Completes the nitrogen cycle, reduces nitrate and phosphate |
| Use | New-tank cycling and ongoing maintenance |
| Coverage | 1 ampoule treats up to 250 gallons |
| Dosing | 1 ampoule every 15 days; dose more often to speed results |
| Water type | Freshwater and saltwater |
| Form | Sealed glass ampoules, no refrigeration |
| Brand | Prodibio (distributed by Red Sea) |
| Made in | France |
How to Use
- Snap open one ampoule and pour it directly into the aquarium, sump, or filter.
- Use one ampoule per 250 gallons, every 15 days for maintenance.
- When cycling a new tank or fighting high nutrients, dose more often rather than using more per dose.
- For the best results, pair with Prodibio Bioptim, which feeds and activates the bacteria.
- On a brand-new tank, the Prodibio Start Up kit adds Stop Ammo ammonia protection on top of BioDigest.
Which Size Is Right for You?
6 Vials suits a single tank that needs a cycle plus a few maintenance doses.
12 Vials keeps one tank dosed for several months without reordering.
30 Vials is the value pack for large systems, fish rooms, and anyone dosing multiple tanks.
Recommended Pairings
- Prodibio Bioptim to feed and boost your BioDigest bacteria.
- Prodibio Stop Ammo for instant ammonia protection during cycling or transport.
- Prodibio Start Up, the BioDigest plus Stop Ammo new-tank kit.
- Fritz Ammonia Test Strips to monitor your cycle.
- More options in our water care collection.
FAQ
Can BioDigest cycle a brand-new tank?
Yes. It introduces the full range of bacteria a new tank needs. For extra protection from ammonia while the cycle establishes, add Stop Ammo or use the Start Up kit.
Will it lower my nitrate and phosphate?
Yes. The denitrifying strains drive nitrate toward nitrogen gas and the blend also helps reduce phosphate, which keeps algae in check.
How often should I dose?
Once every 15 days for maintenance. To speed up purification, dose more frequently rather than increasing the amount per dose.
Do the ampoules need refrigeration?
No. Each dose is sealed in an oxygen-free glass ampoule that keeps the bacteria dormant and viable at room temperature until you use it.
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Prodibio BioDigest


