

⚡ Dive in instantly—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 nitrite and then harmless nitrate. Suitable for both fresh and saltwater tanks, it enables immediate fish addition, supports ecosystem balance after water or filter changes, and helps prevent fish loss. BPA-free and highly rated by over 2,700 users, it’s a must-have for proactive aquarium managers.



















| ASIN | B006YG1ZLC |
| Allergen Information | BPA-Free |
| Best Sellers Rank | #10,863 in Pet Supplies ( See Top 100 in Pet Supplies ) #81 in Fish Medication & Health Supplies |
| Brand | API |
| Brand Name | API |
| Customer Reviews | 4.7 out of 5 stars 2,716 Reviews |
| Global Trade Identification Number | 00317163030899 |
| Item Form | Liquid |
| Item Type Name | API Quick Start, 4 OZ |
| Item Weight | 0.3 Pounds |
| Item form | Liquid |
| Item weight | 0.3 Pounds |
| Liquid Volume | 118 Milliliters |
| Liquid volume | 118 Milliliters |
| Manufacturer | Aquarium Pharmaceuticals |
| Manufacturer Part Number | 89C |
| Model Number | 89C |
| Pet Type | Fish |
| Target Species | Fish |
| UPC | 317163030899 |
| Unit Count | 1 Count |
| 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
A**D
Good product
Good product to start new tank
D**S
It works
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**.
un po' difficili da trovare
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.
S**H
Produit de base
Bon produit pour débuter un aquarium de façon sécuritaire.
R**H
Know your water chemistry
Very good but know your water chemistry and what you want to achieve.
Trustpilot
1 week ago
2 weeks ago