API QUICK START Freshwater and Saltwater Aquarium Nitrifying Bacteria 1-Ounce Bottle, Blues & Purples

Speedy shipping I added it to my tank and all my fish are fine

Some people say this doesn't work but my tank seems to be cycled (hurrah!) Just checked today and nitrites were 0 and nitrates were 5, which is great news because this stuff is so much more affordable than the Fritz Turbo Start 700 I would've tried instead if this didn't do the job

Better water quality, fast result. Cheap price good size for one fish tank. Helps water clarity.safe on fish and plants.

I've bought this brand before that's why I bought it again wish I had bought the bigger bottle because I actually bought it for a 5 gallon and switched to a 10 gallon and this bottle is actually for a 5 gallon. But I like this brand I've never had any problems with this brand and now I like buying it online with Amazon

I cannot say enough about this brand of fish stuff. everything we have used for our fish tank and this brand has done wonders.

Not sure if this really worked, I started up a new quarantine tank yesterday (20 gallon) and added the whole bottle plus bacteria starter and prime and today when I checked the nitrates today and it was around 0.10 which is really good for a brand new tank cycle ! I’ll test the theory again with just the product only next time but no complaints!

I don't know much about fish or anything aquatic to be honest. I got a betta fish from Petco but it seemed like he developed some sort of popeye within hours of having him, he stopped swimming and eating for about a week and I thought that was it. I learned about needing to have a tank prepped with good bacteria prior to adding fish and quickly bought this on amazon to see if it would help him. I'm assuming the little floating particles were the bacteria starting to grow, and soon, he started to eat, and swim too. My little guy has been living for a few months now and is now a very fat fella. Thanks.

Bottle arrived in good shape but seal was missing and only one teaspoon remained in the bottle.

Worked as needed

Superb product. API is one of my resources for many of my aquarium essentials. Never had any problem with any of there items. Great value for money, with many products giving you size options for what you need. All products from medicated to water parameters and plant care. These products are made with an ease of understanding for what that purpose is and will help you on your fish keeping journey.

I was aware of the amount because I did read the description but it was still a little disappointing, haha. That’s just me. Good product though.

Useful, excellent

The mixed reviews and its claims have made me worried about using this. However I put a half measure in. I found in some fish products you can have Armageddon so if in doubt don’t use it or use smaller measurements. I have no fish in the tank yet and I’ve been doing test strips. Fish in two weeks and water checks coming to satisfactory so must play some part. I usually use cycle but water tests for both have been good.