I wish I had heard about this sooner, it's really helped cycle my tanks and boost my beneficial bacteria in my tanks so I don't have to wait 4-6 weeks like I would normally have to!

I just set up a new freshwater tank system and I used another product to attempt to jumpstart the cycling process. I saw little to no results but then I tried this and it worked overnight. My ammonia levels went to 0 overnight and it reduced my nitrite levels within a week of dosing and I'm finally starting to see nitrate levels rising. This literally jumpstarted my tank by dosing for a week. I'm very happy with the results and my fish seem to think so too. Great product and I would definitely recommend.

I use this every time i start a new tank if i want fish in early i use this wait about 2 hours and go buy my fish and away they go with out fish lost

I am not new to fish-keeping and have always dreaded the cycling process. Whether done with fish or without, it takes several weeks/months and can be very frustrating and result in fish loss. This product is amazing!!! I set up an aquarium from scratch about 3 weeks ago and used this product as directed on the bottle. My aquarium looks beautiful and all water parameters are within desired limits. I know the bacteria are proliferating adequately because I have detectable nitrates and almost zero ammonia at this point. I have not lost any fish. I performed a partial water change yesterday and added this product again to ensure an adequate supply of beneficial bacteria. My fish are happy and so am I . It can be hit or miss with most "bacteria in a bottle" products but Nite-Out II really works and the nitrifying bacteria are definitely live and potent. I plan on adding a few more fish soon (my tank is currently understocked) and will use this product to ensure the new fish don't overwhelm my system. Bonus, it doesn't cloud the water and the fish don't seem to mind when you pour it in. Highly recommended!!

I have established multiple aquariums using nite out 2 , I use it once and water perimeters are always perfect, after doing months of frequent water tests I confirm it is 100% effective

I had to many difficulties with amonnia in my tank and tried other products that assure to age Water, eliminate ammonia or neutralize it, but ammonia levels were still high and fish continue diying, but after using this for three weeks Water parameters are perfect.

It takes time to for the bacteria to grow, although it does cycle good.

Only takes a little and works great. No clouding water.