Brightwell AquaticsMicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 135.25 fl oz

I decided to get my neglected reef tank in order after YEARS of doing nothing but keeping the ATO reservoir full. Dropped nitrates from over 160 to zero in a few months with aggressive (50%) weekly water changes and upgraded oversized skimmer. The perfect rapid nutrient reduction recipe for a dinoflagellates outbreak and that's just what happened. I mixed a capful into 2 cups of tank water and put it in the sump/display of my 30g/10g for 5 days. Turned the skimmer off for 4 hours per instructions, didn't turn the lights on for the 1rst 2 days and feed daily instead of the every 3rd day I was doing. Dino outbreak was gone completely in 3 days! I know it's not specifically marketed for this or cleaning and I've never been a big believer in bacteria dosing especially in an aquarium like mine that's been running (albeit neglected) for over a decade, started with REAL Fiji live rock (back when they were importing and it was affordable) and has had enough new coral additions to add bacteria diversity BUT this seems to actually do something noticable for me.

Must have for your fish tank ! Helps keep your community healthy and replenishes good bacteria needed to cycle properly! If your new to the aquarium hobby their are some great resources on YouTube ! Happy aquascaping !

I can’t thank you enough for making such a great product. I had a huge nitrate problem and fish were dying daily. I was trying everything I could to help them, doing drastic water changes every other day, using filter additives and other products but nothing seemed to help and they kept dying. I could literally tell a difference within one day of using it. The water became a bit clearer and the fish seemed to be in less distress. But by the second day of dosing my neon tetras, who had been gasping for breath and swimming sideways, were swimming normally again!!! I had lost most of the school over the previous week and thought they were goners for sure but they came back to and it’s day four now and I haven’t lost one more fish! They’re all swimming normally now, the water looks so much clearer and my light is shining very brightly through the tank! I can’t recommend this product enough!! It literally saved my fish’s lives and helped me emotionally as I felt so guilty for losing so many of them. I bought a huge bottle and will keep dosing every day for the next two weeks, and will plan on using it once a week for the rest of my fish keeping days I’m so sold on this product. If they have stock I’m buying as many shares as I can afford LOL

This stuff really works. My nitrates were well over 20ppm and I used this along with Brightwell Aquatics Reef Biofuel and Algone water clarifier and nitrate remover and the results were amazing. I had been just using Reef Biofuel and Algone but I decided to add this product as well and it worked. Within a week and a half to two weeks my nitrates fell to zero, not near zero but actually zero! I highly recommend using all of these products together. I have had no problems, no adverse reactions and nothing has died in my aquarium from using them together. The tank I used it on is a 180 gallon reef aquarium with lots of corals, inverts and reef safe fish. My water is crystal clear and everything is healthy, happy and beautiful! I have been keeping reef aquariums for 20+ years and this combination is by far the very best! Please give this a try, you won't regret it!!!

This is a good product, my tank never looked better.

Follow the directions. Don’t just pour it all in. Personally I use an eye dropper and dose every day

very good

This bottle of magic bacteria did pretty much exactly as advertised. I'm a newer saltwater reefer struggling to maintain good ammonia and nitrite in the early stages of my tank. I thought I followed all the steps and had my system seeded before adding fish, but I guess I must have been overfeeding because my ammonia kept spiking and my nitrates stayed consistently high, even with twice a week 30% water changes. The other day I got fed up with the 'by the book' method and decided to purchase this after reading some good reviews and internet advice. And honestly after doing a 30% water change and dosing 5mL of the stuff, one day later and my ammonia is back down to 0, as well as nitrites. This result made me very happy lol.I don't know how sustainable of a solution this is but I will continue with the recommended daily dosage for the next week or two and hopefully that is enough to seed my aquarium with enough bacteria for my current bioload.

Does what it says and a must have product in case of emergency situations as well for your tank 👍🏻

This product doesn’t work. Nor bacteria growth. I have been using it for a more than a month and nothing happened.

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..

I was facing diatom issue for months, I try many things to reduce diatom, at last some one told me try microbacter7, my tank 120 gallon reef tank mixed. The result was not quick but after 2 week unbelievable tanks looks so clean sand bed, rock, water it’s a miracle, inside daily 20 ml. From last month I am dosing 20 ml every day.

I can’t open it . Just want return .