








⚡ Dive in fast, keep your fish happy! Instant cycle, zero wait.
API QUICK START 16 Oz is a powerful nitrifying bacteria solution that instantly initiates the aquarium nitrogen cycle by converting toxic ammonia into harmless nitrate. Suitable for all life stages and both fresh and saltwater tanks, it ensures a safe environment for fish during new setups, water changes, and fish additions. BPA-free and made in the USA, this liquid treatment is a must-have for proactive aquarium care.



| ASIN | B006YG12F6 |
| Allergen Information | BPA-Free |
| Batteries Included | No |
| Best Sellers Rank | #1,980 in Pet Supplies ( See Top 100 in Pet Supplies ) #31 in Fish Medication & Health Supplies |
| Color | multicolor |
| Customer Reviews | 4.7 4.7 out of 5 stars (12,369) |
| Date First Available | 7 August 2012 |
| Item Form | Liquid |
| Item Weight | 454 g |
| Item model number | 89E |
| Number of Items | 1 |
| Pet Life Stage | All Life Stages |
| Pet Type | Aquatics, Aquatics Water Conditioner, PetSupplies |
| Product Dimensions | 6.35 x 6.35 x 22.23 cm; 454 g |
| Quantity | 1 |
| Size | 16 Fl Oz (Pack of 1) |
| Special Features | Made In America1 |
| Specific Uses | Active |
| Volume | 122.63 |
| batteries required | No |
B**E
Very recommended
Its good to rapidly reduce ammonia
A**N
Don’t Buy for cycling new tank
Won’t recommend this product for cycling your new tank.
V**R
Product damage and leaking
Product damage and leaking
M**H
Does nothing
it took me weeks to start the cycle
M**T
Tried a few other types and this one works the best for my fish. They are happy and healthy, which means so are we!
S**N
Very good for the money. Works as good as a bacteria in a bottle can work!
S**E
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
G**A
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.
D**H
Great price quality first class
Trustpilot
2 months ago
4 days ago