API Aqua Essentials
API Aqua Essentials is a highly concentrated all-in-one aquarium water conditioner. It prepares water for aquarium use, removing chlorine, chloramines, and heavy metals from tap water, and instantly detoxifying ammonia, nitrite, and nitrate. Use when setting up an aquarium, after water changes, and when ammonia, nitrite, and nitrate are detectable with a test kit. Available in 3 different sized bottles: 118ml, 237ml, and 473ml.
API Aqua Essentials instantly removes toxic ammonia, nitrite, and nitrate levels in both freshwater and marine aquariums.
| Product Size | Volume (ml) |
|---|---|
| Small | 118 |
| Medium | 237 |
| Large | 473 |
FAQ
Can API Aqua Essentials be used in both freshwater and marine aquariums?
Yes, API Aqua Essentials is effective in both freshwater and marine aquariums.
How much API Aqua Essentials should I add per liter of water?
The instructions specify the dosage based on the volume of water. One dose is sufficient for 1 liter of water. Always follow the dosage guide provided on the packaging.
Does API Aqua Essentials remove nitrates from water?
API Aqua Essentials detoxifies ammonia, nitrite, and nitrate, but it does not remove nitrates from the water permanently. It neutralizes their toxicity immediately.

Ryan Watson –
I’ve used API Aqua Essentials for several months now and it’s made a big difference in my freshwater tank. The water feels safer after each change, and my fish seem more active and less stressed. The 237ml bottle lasts a long time and is easy to measure.
Adrian Henderson –
Great product for new aquarium setups. It quickly neutralizes chlorine and ammonia. I use it after every water change and my fish haven’t shown any signs of stress. The instructions are clear and the bottle is easy to handle.
Alexandra Cameron –
I switched from a cheaper brand and noticed a clear improvement in water quality. My marine tank has been stable since using API Aqua Essentials. It works well even when nitrite levels are high.