I bought it to help my betta fish have s better water environment and I can honestly say they seem more active and comfortable so I’m happy

Had an ammonia spike in my new aquarium after a couple of weeks of putting in a few weeks. Went spastic and googled what to do. API Ammo Lock was the first solution that showed up and I quickly bought it and followed directions. Thanks API!

Completely neutralized any ammonia in the water, great for new tanks.

This works really well would recommend compared to other similar products

Helped within hours. Really grateful to have been able to save our 4 year old goldfish and avoid breaking the heart of our 7 year old!

So far it seems to be working well. The bettas don’t seem bothered by it. Helps with keeping the ammonia at bay.

API Ammo Lock is the only thing on the market that I've found that actually works at detoxifying the ammonia in my indoor ponds. I have one pond that has three Ryukins and one that has two Black Moores. With API Ammo Lock the ammonia levels are kept safe for my beautiful fish. I do water changes on a regular every 4 day schedule, but lets face it even with a good filter and the use of charcoal, ammonia levels can climb pretty fast. With the use of Ammo Lock every time I do a water change I don't worry anymore. You have to remember, if you use API Ammo Lock, ammonia will still register in your water testing. Ammo Lock doesn't remove the ammonia it converts it to a non-toxic form. And it is proven to protect the fishes cells and eliminates fish stress caused by ammonia in the water. Believe me if there was anything out there that was better I'd be using it. This stuff works. Thanks API

Goldfish started developing black stops, bought a test kit and it was because of the high ammonia levels. Bought the ammo lock and did several water changes and the goldfish is back to normal and the ammonia level is back to zero.