Fluval Biological Enhancer: Improve Your Aquarium's Ecosystem

Walt g.: 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.

United States on Oct 19, 2023

JOSE R.VEGA: So it dosen't kill my fish

United States on Aug 10, 2023

Kim W: 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.

United States on Jul 13, 2023

Victoria: 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.

United States on Jun 21, 2023

George Jr: Value for the price with 2 large aquariums

United States on Jun 20, 2023

Hayley S: Update - the company replaced my product hassle free and where very courteous. This one has a great expiry date.

Was a good price for the item but unfortunately it expires in May 2023 so not so good value as I won’t be using it all in a month. I have raised this issue with the seller so I’ll see what happens when they get to me

United Kingdom on Apr 23, 2023

Dean: This is one of the rare products that actually work and does what it supposed to. Great stuff.

United Kingdom on Jan 09, 2022

Kindle MumC CustomerKindle MumC Customer: Does what us says on the bottle! Good stuff.

United Kingdom on Aug 10, 2021

McLeodMcLeod: I use this product when setting up a new aquarium (as part of the nitrogen cycle to promote healthy ammonia eating bacteria growth, a 6 to 8 week process) and as part of my weekly water changes. I feel that this product works very well, as my fish are all happy and healthy and I have never experienced any bad water quality issues (ammonia spikes etc).

I use this weekly to add to my 200ltr, 60ltr and 30ltr aquariums when I do a water change. I change 20% - 30% of the water volume and add an appropriate dose of this stuff, however it's not really possible to overdose so it does not really matter if you add a little bit extra. I usually do add a bit more than stated on the label. I keep it stored at room temperature and the 2ltr bottle usually lasts me about 6 weeks.

There is always a seal covering the opening after the lid has been unscrewed, so you know it is brand new and has not been opened / tampered with. This is safe for my fresh water aquarium inhabitants, of which I have many varieties.

Pros:
- The larger 2ltr bottle is excellent value compared to the 250ml or 500ml bottles
- Quick delivery / repeat orders available
- Far cheaper than my local...

United Kingdom on Apr 03, 2021

Amazon CustomerAmazon Customer: Outstanding product. Look at the difference in my before and after pics (after 1 hour of treating). Easy to use set to a 4 as had to convert US gallons to uk litres after measuring my tiny tank. Used about 2ml so I've got years of use for the price. Used at same time with Fluval Quick Clear.

United Kingdom on May 12, 2020