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

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

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

Works as expected. Speeds up the nitrogen cycle in the new tanks. Not bad, though I wouldn’t completely trust it to add new fish into water fresh from the tap in a new tank. I think you still need it to age it a bit and let it cycle and then add this stuff to speed up the process

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

UPDATE after using this TWO of my fish died. All I did was transfer from one tank to another and followed directions on this bottle and woke up to a dead Oscar and a dead bloodworm. THANKS!!!!! Price is terrible. When I got this I didn’t realize it’s 1 oz. Look for the 4oz bottle instead. I got ripped off.

The API QUICK START Nitrifying Bacteria is a helpful product for setting up new aquariums. It makes cycling easier by quickly establishing the biological filtration system. After using it in my freshwater tank, I noticed the ammonia and nitrite levels stabilized much faster than usual, making it safe for adding fish sooner. The small 1-ounce bottle is convenient for smaller setups, though larger tanks may require more. Overall, it's a great solution for anyone looking to kickstart their aquarium's nitrogen cycle efficiently.

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.

Great product and excellent customer service. My first bottle arrived empty, but the seller sorted it out straight away and sent a replacement very quickly with no hassle. Really appreciate how fast the problem was resolved. Very happy with the purchase and would definitely buy from this seller again.

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.

Working well.