

⚡ Dive in instantly with API Quick Start – your fish’s new best friend!
API Quick Start is a 4 oz liquid treatment containing nitrifying bacteria that jumpstarts the aquarium nitrogen cycle by converting toxic ammonia into harmless nitrate. Suitable for both fresh and saltwater tanks, it enables immediate fish introduction, supports tank stability after water or filter changes, and is BPA-free. Trusted by thousands with a 4.7-star rating, it’s a must-have for any serious aquarist.


















| ASIN | B006YG1ZLC |
| Allergen Information | BPA-Free |
| Best Sellers Rank | #21,458 in Pet Supplies ( See Top 100 in Pet Supplies ) #155 in Fish Medication & Health Supplies |
| Brand Name | API |
| Country of Publication | USA |
| Customer Reviews | 4.7 4.7 out of 5 stars (2,658) |
| Global Trade Identification Number | 00317163030899 |
| Item Form | Liquid |
| Item Type Name | API Quick Start, 4 OZ |
| Item Weight | 136 g |
| Liquid Volume | 118 Milliliters |
| Manufacturer | Aquarium Pharmaceuticals |
| Manufacturer Part Number | 89C |
| Model Number | 89C |
| Target Species | Fish |
| UPC | 317163030899 |
| Unit Count | 1 Count |
P**Z
Good
Good
A**N
Very Good Product
perfectly pack and delivered on time. if you are a fish keeper then you must have this. to keep you fishes healthy and keep the aquarium cycle balance.
D**H
Bacterial culture
Placed yet to see result. But fishes happy in new tank
S**.
seems like bacteria were dead upon arrival
Case of back luck but it seems bacteria were dead upon arrival - i tried dosing as per bottle instructions and there were no changes in nitrate levels over the course of 3 weeks.
A**H
Dose not work
Killed my fish
J**.
This is such a great product for aquarium set ups, at the start up or clean up stage. I've used it to cycle my 3 gallon tank for a single betta. Very convenient to use and quality of aquarium water is clear and clean. I'm using a sponge filter with API Quick Start - I add some to my tank water according to the instructions, every time I clean the aquarium. It's working well for me to date.
A**D
Good product to start new tank
D**S
It's Quickstart, it's API. It's not bad at all. It does what's supposed to do. Just add it during big water changes (30%+) and you are golden. Good to buy you some time when treating ammonia too.
O**.
ottimi prodotti un po' più cari x l Europa e poco commercianti. pratico ed efficace.consiglo x cambi d acqua o avvii di vasche nuove.
R**H
Very good but know your water chemistry and what you want to achieve.
TrustPilot
5天前
1天前