Fluval Cycle Biological Enhancer, Aquarium Water Treatment, 16.9 Oz., A8351

Good

Works well with my fish.

I am fortunate enough to understand that this is not exactly an immediate fix for an uncycled tank. No fish deaths. However, what this stuff is excellent at is speeding up the cycling process. I tracked my 10gal aquarium parameters until they all held stead at 0ppm Ammonia, 0ppm Nitrite, 5ppm Nitrate for 3 days. It took me 24 days to do so, using the recommended dosage of this fluval bacteria. NOTE: You still need to do water changes when you are cycling a tank. I didnt until the last week and then boom... cycling finished 4 days after I did daily water changes. After that you can do the normal 1 per week. Overall, Excellent product for speeding up a tanks cycling. I believe that I could have done it in 2 weeks instead of 3 had I dont more regular water changes. But, for the love of God, DONT ADD FISH IMMEDIATELY!

No more crashing tanks or cloudy water I just add to all my tanks 20 min after Prime. Nothing compares to it. My water has never looked this good!

Great stuff!

Ive started up aquariums a few times in my adult life, not knowing about the cycling concept. After all of the fish died, I gave up. I decided to try once more for my kids after doing a lot of research. I set up the tank and let it run about 3 days, then added some Fluval Bio Enhancer and 3 fish. They all thrived! Since, Ive added 2 more fish and a water frog. Its been about a month now and I havent lost a single one and theyre all healthy and happy. I add a little after the weekly water changes and it does the trick. If you dont want to wait to cycle a tank (especially if you have kids), try this stuff. It really works!

Did nothing for me. Used as it says on a bottle in a 45 gallon tank. Never cycled.

El producto no sirve, nunca cumplió con la función para la que fue creado Fluval me dio respuesta para resolver el asunto, sinceramente es gastar el dinero de manera innecesario no lo recomiendo

This stuff works amazing in my fish tank had troubles with ammonia and had bought ammo lock and that stuff doesnt work like it says it does. This stuff has removed all of the ammonia in both of my fish tanks 30 and 55 gallons fish will be buying more just to keep on hand!! :) but u have to buy the others to go with it as well! :)

Works like a charm in our pond, every time. We had recently done a complete water change after all of our fish suddenly fell ill, and we were having a really hard time getting our water back to normal and it seemingly refused to cycle. After having zero success with Nite-Out, and adding all the beneficial bacteria known to man etc, we added the Fluval and all was right again in the pond after a few short days. This bottle was huge too! Especially compared to the smaller bottles available at our local fish stores, so well have plenty extra on hand if needed. Great buy! Definitely recommend this product when your water is testing funky.