FluvalCycle Biological Enhancer, 250 ml ( Packaging may vary)

Seemed to work well tank cycled quicker

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 pet storeCons:- Nothing I can think of reallyI hope this review has been helpful to you.Happy Fish Keeping!

Great condition

Handy back up to have in case you have a mishap they could disturb your cycle but quite expensive for what it is.

A must for starting your aquarium cycle, especially if it’s your first aquarium set up and you don’t have any access to cycled materials. 👍

Great for starting a water cycle off quickly.

Does exactly as it says on the tin or bottle!!! Definitely a must have for the health of your fish to get the chlorine out of tap water and help control ammonia.

I got a new aquarium so new substrate, new filter, (new everything, basically).I filled the tank and let it run for a few days then added the first dose of the recommended three day initial course of Fluval Cycle. On day two a test strip showed all levels of potential concern (ph, chlorine, carbonate, total hardness, nitrite and nitrate) were within acceptable parameters. Accordingly it looks like I could have introduced fish before I had even introduced the second measure. Instead I waited until after the third dose, introduced some neon tetras and two catfish and they are as happy as any fish I have seen in established tanks.I'm confident further measures of Fluval Cycle weekly, at water changes and when introducing new fish can only be beneficial.