Fluval Cycle Biological Enhancer, Aquarium Water Treatment, 1 Oz., A8346

I purchased this bacteria supplement because I have a lot of trust in fluval and I needed to cycle a new filter for some messy puffers.Not only did this stuff take the ammonia down to 0 by day 2 it had the tank fully cycled in just five days! (Based on water tests)I’ve now used it on guppy breeder tanks with new media and with my shrimp.Zero issues with it negatively affecting anyone and it works like a charm!Over all this stuff is a 10/10 in my book.I will continue to purchase bottles to kick start new systems and to help during media changes.

I did use it when I crashed my cycle and was able to get back on easily.

It is recommended that you use it in conjunction with the Bological Cleaner. The two of them together cleaned up the tank and are keeping it clean and clear. Awesome! Definitely recommend!

It cleans up all the nasty toxins from fish poop. Nitrates and nitrites is a fancy way of describing decomposing waste which includes uneaten food.

It not only is boosting my tanks bacteria, but even helped with a bacteria bloom.

I used this in my freshly setup tank and it did help keeping the fish alive while trying to cycle the aquarium. The cycling process would still have to happen and this product may not speed that up. It is only intended the keep fish alive during the process. Other factors such as pH and nitrate levels have to also be considered as they can be harmful while this additive is only meant to detoxify the harmful spikes of ammonia and nitrite during the cycling process.

After a 25% water change, waited 24 hours before reintroducing goldfish, the levels all looked great, hours later the 2 goldfish were dead :(I had also added the Fluval Bio Cleaner, so I don't know which, if either, were the cause. Instructions were followed, all the water readings were good, still ended up losing my fish.Aquariums can be hard to maintain. I've had years with no trouble and I've had random, sudden disasters. This review is simply that I tried a new brand of chemicals and the outcome was not good. Can I prove it was the chemicals? Nope. Will I use this brand again? Nope.

GOOD