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🐟 Dive into crystal-clear waters faster with MicroBacter Start XLM!
Brightwell Aquatics MicroBacter Start XLM is a 15x concentrated liquid bacterial supplement designed to rapidly establish and maintain biological filtration in saltwater aquariums. It accelerates nitrifying bacteria colonization to cycle tanks in as little as 7 days, reduces harmful ammonia and nitrite levels in high-density setups, and supports quick recovery post-cleaning or medication. Made in the USA, this scientifically backed formula ensures a stable, thriving marine environment for both new and established tanks.









| ASIN | B082BWNQ37 |
| Allergen Information | Sulphites Free |
| Best Sellers Rank | #40,589 in Pet Supplies ( See Top 100 in Pet Supplies ) #343 in Fish Medication & Health Supplies |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.5 4.5 out of 5 stars (741) |
| Global Trade Identification Number | 00810086019519 |
| Included Components | MicroBacter-StartXLM |
| Item Form | Liquid |
| Item Type Name | Aquarium Bacteria |
| Liquid Volume | 250 Milliliters |
| Manufacturer | Brightwell Aquatics |
| Target Species | Fish |
| UPC | 810086019519 |
| Unit Count | 1 Count |
L**S
Keeps the tank in good shape
D**.
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.
M**W
This will always be my go-to from now on. Works like a charm
T**.
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**.
I used this product to speed up my fish tank cycle. It did a good job and dropped Amonia to zero really quick
Trustpilot
2 weeks ago
1 day ago