Please DO NOT use Nutrafin cycle. I did plenty of reading and reading reviews on Amazon, this stuff simply doesn't work how you want it to. I used it for my first tank and ended up with dead fish after I stopped using it. The reason is because there are 2 types of beneficial bacteria. The scientific names are drawing a blank on me, but one kind is naturally forming, free in the air we breathe. The other form is the kind found in Nutrafin Cycle. While the beneficial bacteria in the bottle will work, per say, you will need to use it every water change, every new fish, every week, all the time. You can't stop using it, or your fish will die because you aren't adding more bacteria. In order to maintain a healthy tank, all you need is weekly water changes with a good dechlorinator (Seachem Prime). Read up on fish less cycling.
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