

🧬 Elevate your aquarium’s ecosystem — because your fish deserve the best!
Brightwell Aquatics MicroBacter7 is a 16.9 fl oz advanced microbial bioculture designed to rapidly establish and enhance biological filtration in both freshwater and saltwater aquariums. Featuring a unique blend of aerobic and anaerobic bacteria plus natural enzymes, it accelerates nitrification, denitrification, and organic waste breakdown, significantly improving water clarity and quality by reducing harmful compounds like ammonia, nitrite, nitrate, phosphate, and hydrogen sulfide. Made in the USA and vet pathologist tested, it’s the go-to solution for maintaining a balanced, thriving aquatic environment.







| Brand | Brightwell Aquatics |
| Customer Reviews | 4.7 out of 5 stars 3,378 Reviews |
| Item Form | Liquid |
| Item Weight | 16 ounces |
| Liquid Volume | 500 Milliliters |
| Manufacturer | Brightwell Aquatics |
| UPC | 611102132522 810086012206 787461534205 |
C**I
Helps to stabilize newer aquariums quick!
Been struggling to get my nitrite values normalized using API Quick Start. It’s Day 3 of using MicroBacter7, and my values are in a safe range. Water is clear and my fish are happy. Great product, will continue to use this from now on! Highly recommend.
T**R
Works as intended - 0 nitrates
This stuff works as intended. I will be honest, I thought this was a type of bacteria to boost bacteria biodiversity, and technically it is but it is mostly an enzyme to tackle nitrates in your tank. Ever since I've dosed this my tank has stayed at 0-.1 nitrates which can be good at times. But some nitrate can help foster coral growth. And ever since I've dosed this, my corals haven't grown as fast as they used to. So I would say this product is great for when your tank has been established and you want to "freeze" your tanks growth. But for new tanks I would stay away for awhile and instead buy brightwell clean which has the bacteria to broaden your bacteria biodiversity. The enzymes in this product eat at the nitrates and turn it into nitrogen gas which completely eliminates nitrates so if you want some nitrates, use this product with caution. But if i had done my research and used this product as intended, it did exactly what it was meant for.
J**S
good
as far as I know it works great , the fish are still alive as well as the plants in my ten-gal tank
R**U
Chicken or the egg?
Hard to say if this really did anything for my aquarium. I added this to a fairly new setup that was having some cloudiness and it eventually got clearer but results werent overnight. With that said, it's hard to say it's because I added this.
L**E
Buy it! It’s my number 1 recommendation for fish keepers!
Literally everyone with an aquarium should own this! Without question better than seachem, fluval or any other bacteria seeding additive. I’m so glad I found this at a locally owned store when I needed it most. They also have one with starter bacteria. If I could give any aquarist one piece of advice it would be to buy this product!
J**R
Definitely buy!
Love this stuff. My fish are healthy, water is better quality, really happy I found this product!
K**1
wonderful product
I've had a 40 gallon frish water fish for over 25 years; constantly stuggling with green algae, dirty plants and algae invested items in the tank.Thi product eliminated the green algae; don't have to clean the plants, ect. every month at the monthly tank cleaning. tank is crystal clear all the ime. wonderful product.
D**S
the go too
i need to buy more it work
Trustpilot
2 weeks ago
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