Nutrafin Cycle 2L Biological Aquarium Supplement

I have been using this product for several years now each time I do a water change and when I introduce new fish and have had great success with it. I am not sure that it will cycle a new tank very quickly (mine all took the normal few weeks in spite of using Cycle). There is nothing that can beat some old filter media if you want an "instant cycle".

Larger bottle size is perfect for larger tanks and people with more than one tank.Great value as I go through this stuff at a rate of knots with a large tank and a small tank to deal with.The pump action top is genius, as I don't have to fiddle about with measuring cups, it gives you just about the right amount with one pump.I have always used this product in the smaller bottles, but this is far better value

come very quickly, price is good considerig the cost of a smaller one aaist this. i would definitly recommend this for any one with a tank. goes great wth hagen ntrafin aqua plus 2l

A good value package which came promptly. I was surprised how much product it took to restore the tank water quality.

Good value

Perfect for dealing with sudden changes in water chemistry, though you must also deal with the cause to prevent a constant battle with water chemistry.

Item as described and fast delivery.

Only got to use it once fish died after incident with cat