API AMMO-LOCK Freshwater and Saltwater Aquarium Ammonia Detoxifier 16-Ounce Bottle

Works exceptionally well it helped my goldfish get over their ammonia disease.

I have a 2 gallon tank with a Betta and snail. Some plants and a strong enough filter. I don’t think I over feed and clean up leftovers before turning the filter back on. I removed any dead or rotting plant pieces and did a partial water change. I used non chlorinated tap water. The next day the ammonia levels on detector were worse. I swapped out a little bit more water and expected a change. Nothing! I ordered this product it came next day. I was so concerned because directions are for a ratio of a ten gallon tank. My brain does not work well first thing in the morning and I was not going to start mixing up 10 gallons of water either. If you’re in the same boat, fear not. I’ve got you covered. I have included in pictures that the cap has measurements for 1,5 and 10 milliliters. 1ml. of solution per 2 gallons of water, 5ml. Solution per 10 gallons of water and 10ml. Solution per 20 gallons of water. Basically whatever gallons your tank is, divide in half and that number is the amount of ml. needed. Ammonia levels were reduced in minutes.

works great to get rid of ammonia in tank

I bought this when I had a spike in my ammonia levels in my fish tank. It worked to help bring the ammonia level down, while I was doing water changes. It never completely removed the ammonia though, but it did drastically lower them. It helped to keep the fish alive and stable while doing water changes, so for that I would buy it again, if ever needed.

I was surprised at how well this worked. My dog had bad breath so bad that it would scare children. It only took a week, but I noticed improvement.

I have had my freshwater tank since 2018 and never had an ammonia problem like this before. For about 3 months I've tried everything. I guess the ammonia problem was caused because I increased fish, but I have no idea because I have a 100 gallon external filter on my 20 gallon tank. Anyway, the problem was persistent ammonia even after a 25 or 50 % water change it would creep back up in 1 day. I tried adding media specific for ammonia and nothing helped, for weeks, and months Desperate to solve this, I bought Ammo Lock because I was leaving town for a week. Immediately my ammonia test results went from green to yellow. I also put in a 1 year ammonia meter and it is indicating yellow as well. Typically, I change the water weekly, and I will include this in my routine from now on. Nothing else was making the ammonia manageable before this. Highly recommend.

I was having awful ammonia problems in my tank, despite it A) not being overstocked B) not overfeeding C) no dying plants. I was doing daily water changes (45%) and the ammonia was still building up. Even after replacing the filter (the filter did need replacing) the ammonia was still building up though not as fast as before. For a tank that I've had set up for two months now, it was really frustrating how it wouldn't cycle properly. What I did was change the water, then put in the ammo lock along with two other API products, stress coat+ and quick start. I think it helps to use ammo lock with other API products, since they do make their products "work together". Anyway, I did this once a day, every day for 4 days. On day four ammonia was at 0ppm. You can't just put ammo lock in and forget about it though. Ammonia builds upon ammonia, so you still have to do water changes to get it all out of the tank. Having the nitrifying bacteria helps to make the conversion of remaining ammonia to nitrate more manageable for the tank.

I’m a new fish keeper and made the mistake of thinking my tank was cycled when it wasn’t. When I added my first fish (a month after set up) my ammonia levels went above the maximum level on the testing strip. The test water was dark blue almost black! I used this as directed. At one point I had a bad bacteria bloom and couldn’t even see my fish, but kept testing and using as directed, along with daily 10-20% water changes. The water cleared up within a week. Cloudiness is the good bacteria putting up a fight. Gross, but not harmful if your water is oxygenated enough. No matter what happened with the water, my fish were active and happy and kept good color. After three weeks, my good bacteria has taken over and no more ammonia. I’m honestly shocked nobody died with the mistake I made in cycling the tank and I think ammolock is why. I have oto cats, Serpae tetras, phantom tetras and sword tails in a 40 gallon planted tank.

This product does not remove ammonia; it only converts toxic ammonia (NH3) into a non-toxic form (NH4⁺) that is safe for fish. Therefore, the total ammonia nitrogen (TAN = NH3 + NH4⁺) is not reduced. Keep in mind that standard test kits also measure TAN, not just free ammonia (NH3). As a result, test readings will not drop significantly after using this product, even though the harmful part has been neutralized. The actual removal of ammonia happens only when beneficial bacteria in the biological filter are working properly.

Works like a charm, made our fish healthy again as long as you use it as per instructions.

I have been using many big brands for my 2 aquarium. I have a one gold fish tank with 18 gold fishes but 2 filters, one top filter and one Fluval canister filter with lots of Biomedia of Api, matrix, denitrate, purigen, etc. But sometimes the ammonia level does increase and tank starts stinking. But with this Api Ammo lock in 2 days everything is under control and the smell also goes away. I have become a fan of API brand and will always buy it. I will recommend these brands if you love your fishes: Seachem, API, ADA, Fluval and BubblesTroubles.

API AMMO-LOCK is an absolute lifesaver! It instantly neutralises harmful ammonia, keeping my fish safe and stress-free. I’ve used it in both freshwater and marine tanks, and it works perfectly every time. The 473 ml bottle lasts a long time, and the dosage instructions are clear and easy to follow. I really notice the difference in water clarity and fish behaviour after using it — especially during filter maintenance or new tank cycles. It’s one of those products I always keep on hand. Reliable, effective, and excellent quality — highly recommend for any aquarium setup! 🐠💧

This is a very effective product which I use for fish transport.