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

API Quick Start is a must-have every time I set up a new tank. It makes the cycling process so much easier by quickly establishing the bacteria needed to keep ammonia and nitrite levels safe for fish. I’ve had great results with it

Works well

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.

I needed to use this since my tank hadn't fully cycled yet, but I do have plants so I wasn't relying on this entirely. It seems to help perk up the system and assist the tail end of the cycle so you don't have to wait for ammonia to build up before you start getting the beneficial bacteria. I'd buy again!

Everything is good but i hate how there’s no 2nd sticker after the blue cap unlike the bigger bottles. When i opened it, it was so close to leaking due to the delivery. this product works as it should be and everything just that if someone throws the package, it will most likely be opened and spilled

I swear by all of the API products, and they never disappoint used this quick start in my 20 gallon tank and water tested perfect just 24 hours later

What can i say about this. If you are in the aquarium business you probably have stock in this stuff too. We buy this at least once or twice a year, about everytime we start a new tank which is often enough. We use existing biologicals that from our filters and tanks but we also toss in a cap or 2 of this stuff as well. Always had great results.

Works amazingly!!! I use it everytime I add new tap water to my tanks definitely when a water change is done. It's also great to get your new tank started it has all the healthy bacteria.