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⚡ Fast-track your aquarium’s health with science-backed microbial power!
Brightwell Aquatics MicroBacterStart XLF is a 15X concentrated live bacterial suspension designed to rapidly establish and maintain nitrifying bacteria in freshwater aquariums. It accelerates the nitrogen cycle, preventing toxic ammonia and nitrite spikes within 5-7 days, ideal for new setups, high-density tanks, and post-cleaning recovery. Made in the USA with a proprietary base for extended microbial viability, it ensures a stable, healthy aquatic environment for fish and invertebrates alike.









| ASIN | B086Z6VTJW |
| Best Sellers Rank | #51,158 in Pet Supplies ( See Top 100 in Pet Supplies ) #414 in Fish Medication & Health Supplies |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,163) |
| Item Form | Liquid |
| Item Weight | 4.97 Ounces |
| Liquid Volume | 125 Milliliters |
| Manufacturer | Brightwell Aquatics |
| Manufacturer Part Number | BACSTARTXLF125 |
| Model Number | BACSTARTXLF125 |
| Target Species | Fish |
| UPC | 810086019595 |
| Unit Count | 1 Count |
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