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๐ Dive into a crystal-clear, balanced tank faster than ever!
Brightwell Aquatics MicroBacter Start XLM is a 15x concentrated liquid bacterial supplement designed to rapidly establish and restore nitrifying bacteria in saltwater aquariums. It accelerates the nitrogen cycle, reducing harmful ammonia and nitrite levels within 7 days, making it ideal for new tanks, high-density setups, and post-medication recovery. Made in the USA with scientifically backed formulations, it supports a stable, healthy marine environment for thriving aquatic life.









| ASIN | B082BWNQ37 |
| Allergen Information | Sulphites Free |
| Best Sellers Rank | #46,675 in Pet Supplies ( See Top 100 in Pet Supplies ) #409 in Fish Medication & Health Supplies |
| Brand | Brightwell Aquatics |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.5 out of 5 stars 753 Reviews |
| Global Trade Identification Number | 00810086019519 |
| Included Components | MicroBacter-StartXLM |
| Item Form | Liquid |
| Item Type Name | Aquarium Bacteria |
| Item Weight | 0.28 Kilograms |
| Item form | Liquid |
| Item weight | 0.28 Kilograms |
| Liquid Volume | 250 Milliliters |
| Liquid volume | 250 Milliliters |
| Manufacturer | Brightwell Aquatics |
| Manufacturer Part Number | BACSTARTXLM250 |
| Model Number | BACSTARTXLM250 |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 810086019519 |
| Unit Count | 1 Count |
| Unit count | 1 Count |
D**.
Does Not Work
Followed all instructions (dry sand, Marco rock etc together with Rapid Cycle from Brightwell) but after four weeks NH3 was still 0.05ppm and Nitrate was only 5ppm. Tank has not cycled in 1 month let alone their claimed 7 days. Have now given up with Brightwell - added live sand and rock and Dr Tims. Hopefully this will work.
R**Y
Works great for the saltwater tank
Easy to use!
L**S
Very good for water quality
Keeps the tank in good shape
T**.
Help the tank cycle fast
This is a great product I used to start my nano reef aquarium my tank cycle in 10 days with living sand and a couple pieces of live rock. I highly recommend this for anyone starting a new tank
M**W
Great
This will always be my go-to from now on. Works like a charm
Trustpilot
1 day ago
5 days ago