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🌊 Elevate your aquarium game with microbial magic — because your tank deserves the best!
Brightwell Aquatics Microbacter 7 Bioculture Fresh & Marine 500ml is a scientifically formulated liquid treatment containing 7 strains of beneficial aerobic and anaerobic microbes plus natural enzymes. Designed to rapidly establish and enhance biological filtration in both freshwater and marine aquariums, it accelerates the breakdown of harmful compounds like ammonia and nitrates, digests organic waste, boosts oxygen levels, and promotes nutrient cycling for healthier plants and corals. Trusted by over 1,500 aquarists with a 4.5-star rating, this product transforms your tank into a crystal-clear, thriving aquatic ecosystem with minimal maintenance.







| ASIN | B001DKSG9S |
| Brand Name | Brightwell Aquatics |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,566) |
| Global Trade Identification Number | 00810086012206 |
| Item Form | Liquid |
| Item Weight | 1 Pounds |
| Liquid Volume | 500 Millilitres |
| Manufacturer | Brightwell Aquatics |
| Manufacturer Part Number | BAC500 |
| Model Number | BAC500 |
| Target Species | Fish |
| UPC | 611102132522 810086012206 787461534205 |
| Unit Count | 500.0 millilitre |
S**W
Great product
Been using this for months in my marine tank.
A**I
Cleared my red cyano problem overnight!
This product arrived just over 24hrs ago and I am really impressed with it. Its several different strains of helpful, safe bacteria in a bottle. So won't harm fish, coral, sponges, anemones, worms etc or the bacteria in your live rock and filter. After a small water change and quick syphon of the really bad parts of my sand I used this as directed on the bottle (remember to turn protein skimmer off for 4 hours). I did this late at night so went to bed. The following morning I woke up to a pristine tank.. it looked brand new inside! Water looked clearer, fish looked brighter and corals etc looked healthier. I was recommended this by a friend to use alongside Microbacter Clean regularly and their tank is now crystal clean and healthy. So will definitely be using this for the foreseeable..
K**N
Microbacter 7
Great product used it many times
P**N
This really works!!!
This product will help your reef system in more ways then one. I had an issue with cyanobacteria and dino, after over doing carbon source my tank and has suffered double zero phosphate and nitrate. so after lot of research and using different chemicals products that didn't really work, this microbacter7 made a massive difference. I dose this for two week as per the instruction and then 3 day black out. All is back on track with my reef tank again. I will definitely be continuing using this product to maintain the balance of my reef, it made all the difference. I hope this review will help out another reefer.
B**S
Did nothing for my cycle
Bought this to cycle my marine tank using dry Rock and supposedly 'live' sand. Had dosed with ammonia and used this product as directed, tested regularly for the presence of nitrites/nitrates and had no action what so ever and ammonia levels stayed the same several weeks on. I know these products are hit and miss, but this one didn't work for me so just a waste of money really. If your thinking of bacteria in a bottle products ...I would forget it and get some cycled live rock instead, I tried around 5 different bacteria in a bottle products and nothing worked until I obtained a small peice of live rock from a local marine seller.
D**D
Great
Excellent product. Used to replenish my bio filter after red slime treatment destroyed all bacteria (good and bad). Done a great good in 2weeks my aquarium was once again breaking down nh3/nh4 into no2/no3
G**W
Microbacter 7
Microbacter 7 very pleased with it it work well good buy Received next day could not ask for more
M**M
Good stuff
Helped to get rid of cyano in my tank took two weeks but tank looks loads better now sand is clean rocks are clean nitrates 5ppm and phosphate undetectable
H**O
com produtos deste genero , acabamos por nunca saber se funciona ou nao. nao vi nenhum tipo de mudanças no aquario ou nos corais...
J**A
Super
K**K
Works great to introduce beneficial bacteria to saltwater and freshwater for the health of your tank.
T**R
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.
A**J
Will review later after using for while.
Trustpilot
2 weeks ago
3 days ago