Is this okay for tanks with coral and invertebrates?

I’ve never kept marine but the principle is the same Stability is for either it states so on the bottle

How much to use in a 105L aquarium? I’m very bad at maths.

5ml for each 38 Litres, so for your 105 Litre aquarium taking gravel etc into consideration 10ml should be the correct dose, the lid is also a measure and has 5 and 10ml lines marked on it.

How long is this safe to use after opened?

According to the bottle it says expires 12 months after opening.

Api Ammo Lock | Desertcart Cayman Islands

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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CI$54

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Sold byAmazon Cayman IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Keep your aquarium thriving—detoxify ammonia instantly and swim with confidence!

TRUSTED LEGACY BRAND - Backed by 50+ years of API innovation, trusted by thousands of aquarium enthusiasts worldwide.
STRESS FREE FISH ENVIRONMENT - Eliminates ammonia-induced stress, promoting healthy gill function and vibrant fish behavior.
DUAL FRESH SALTWATER FORMULA - Safe and effective for both freshwater and saltwater aquariums, ensuring versatile use.
INSTANT AMMONIA DETOXIFICATION - Neutralizes harmful ammonia immediately to protect your aquatic friends.
PRECISION DOSING FOR MAXIMUM SAFETY - Easy-to-use dosing instructions ensure optimal water safety without over-treatment.

API Ammo-Lock is a powerful 473 ml liquid treatment that instantly detoxifies ammonia, chlorine, and chloramines in both freshwater and saltwater aquariums. By converting toxic ammonia into a harmless form, it protects fish from stress and damage while maintaining a safe aquatic environment. Ideal for regular dosing every two days until ammonia levels are undetectable, this trusted formula supports healthy gill function and vibrant fish life, making it a must-have for any serious aquarium keeper.

Specifications

ASIN	B000255N0A
Allergen Information	Apple Free
Best Sellers Rank	7,752 in Pet Supplies ( See Top 100 in Pet Supplies ) 94 in Aquarium Water Treatments
Brand Name	API
Country Of Origin	USA
Customer Reviews	4.6 4.6 out of 5 stars (6,545)
Global Trade Identification Number	00317163050453
Item Form	Liquid
Item Type Name	Aquarium Ammonia Remover
Item Weight	454 g
Liquid Volume	16 Fluid Ounces
Manufacturer	API
Manufacturer Part Number	45E
Model Number	45E
Pet Type	Fish
Target Species	Fish
UPC	317163050453 716184503656
Unit Count	473.0 millilitre

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