API Quick Start 16 OZ / 473.18 mL

Highly effective Improves water quality by maintaining bacterial colonies Easy to use... Rather than other products. Must to stepup a new tank.. also it is good to add once in month so replenish the bacterial colonies

No.1 Product for aquarium , to keep water cycled ,to maintain nitrogen cycle, to erase ammonia, nirite and nirate which is harmful for fish. This Api quick start instantly start the nitrogen cycle which is good aquarium lives and eventually increase their lifespan as pet in aquarium. Thanks Amazon and API.

It really works...like in a matter for 5 to 6 hours the water quality started to improve! IDK if you can see it in the video but the water looks crystal clear to me even without the light, I can see the background poster of my fish tank very clearly! Plus its VERY GOOD FOR your FISH! just run it atleast for one week before you put fish in. In the bottle it says you can add fish instantly but that's actually not advisable, you need to give a minimum of one week for the tank to cycle properly to form the good bacteria! I'm waiting for my week to get completed and then I can start adding the fish

Best nitryfying bacteria for aquarium life.

Nice packaging and very fast delivery and original product

Good quality product Results are identical Good quick result

Really this is the best product, I've been lossing my fishes whenever I change water, but after using this my all fishes are safe.

Water quality improved a lot. my water was a lot cloudy and full of small particles of fish poop which got 100% cleared within a day of using API quick start solution.

Its good to rapidly reduce ammonia

The API QUICK START for freshwater and saltwater aquariums is a total game-changer—especially if you're setting up a new tank or adding fish to an existing one. It makes the nitrogen cycle process way less stressful, both for you and your fish. I used it when starting a new freshwater setup, and within 24 hours my tank was safe and stable. No ammonia spikes, no nitrite issues—it genuinely helps establish the biological filter FAST. It's also great to use after water changes, adding new fish, or cleaning the filter. What I love is that it’s super easy to use—just shake and pour. The bottle gives clear instructions, and the results speak for themselves. My fish were active and healthy from day one. This is one of those products you always want on hand. It helps create a healthy environment and gives peace of mind whether you're a beginner or a seasoned aquarist.

API quick start ist super, ich benutze es seit etwa einem halben Jahr und bin sehr zufrieden. Ich empfehle es mit gutem Gewissen weiter!

Good product

Great price and works as it should for fish health and water clarity