Brightwell AquaticsMicroBacter7 Complete Bioculture for Fish Tank or Aquarium - Populates Biological Filter Media for Saltwater and Freshwater Fish - Aquarium Water Treatments, 67.6 fl oz

Recommended, I used this product each month one time.Good price.

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.

Arrived sooner than promised in good condition. Great product and good price.

Really helped and unclouded the water definitely worth it. I will be using this periodically from now on. Thank you

Good to have on hand

This stuff! Wow ! I used a couple drops for 5 days in my 10gal tank. Two days after placing my fish, the batteries bloom began! Happy this stuff works !

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..