We remain fully operational. Our teams are working around the clock to ensure your deliveries continue safely.
DOWNLOAD THE APP
Customer Services
Copyright © 2025 Desertcart Holdings Limited
DOWNLOAD THE APP
Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.
Desertcart purchases this item on your behalf and handles shipping, customs, and support to UK.
🐟 Dive into crystal-clear waters faster than ever!
Brightwell Aquatics MicroBacter Start XLM is a 15x concentrated freshwater nitrifying bacteria solution that jumpstarts biological filtration in new or existing aquariums. It rapidly establishes beneficial bacteria colonies, cycling tanks in as little as 7 days, while effectively reducing harmful ammonia and nitrite levels. Ideal for high-density fish tanks and post-cleaning recovery, this shelf-stable, American-made formula ensures a stable, healthy aquatic environment for your fish.
| ASIN | B083W4N1T3 |
| ASIN | B083W4N1T3 |
| Allergen Information | Sulphites Free |
| Best Sellers Rank | #20,937 in Pet Supplies ( See Top 100 in Pet Supplies ) #200 in Aquarium Water Treatments |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.5 4.5 out of 5 stars (853) |
| Date First Available | January 14, 2020 |
| Global Trade Identification Number | 00810086019502 |
| Included Components | MicroBacterStart XLM |
| Item Form | Liquid |
| Item Type Name | Aquarium Bacteria |
| Item Weight | 4.97 Ounces |
| Item model number | BACSTARTXLM125 |
| Liquid Volume | 125 Milliliters |
| Manufacturer | Brightwell Aquatics |
| Manufacturer | Brightwell Aquatics |
| Manufacturer Part Number | BACSTARTXLM125 |
| Model Number | BACSTARTXLM125 |
| Product Dimensions | 0.59 x 0.59 x 4.72 inches; 4.97 ounces |
| Target Species | Fish |
| UPC | 810086019502 |
| Unit Count | 1 Count |
L**S
Very good for water quality
Keeps the tank in good shape
M**W
Great
This will always be my go-to from now on. Works like a charm
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**.
It just works
I used this product to speed up my fish tank cycle. It did a good job and dropped Amonia to zero really quick
T**L
Works Great
We bought some of this for our 140 Gallon system and some for our 20 Gallon Quarantine system. They are quick and do a great job of cycling the tank.
K**N
Amazing stuff
I tried a product from a big store and it did not cycle my tank. This product works excellent however, highly recommended.
K**S
works great
I used this to start a new tank a year ago and was pleased with the results. Biofiltration is the most important to reef success.
T**N
Established a new saltwater tank in 2 weeks during fish-in cycling!!!
This established my NEW 75 gallon saltwater tank in 2 weeks. I did the full dose as bottles recommends for the first initial dose, and did partial dose per bottle recommendations for repeat dose a week later. I tested the water daily. I do highly recommend.
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.
Trustpilot
3 weeks ago
1 month ago