I ran it through for a just over a week added some nutrafin cycle for the 1st 3 days then i put food in each day and finally today i put my fish in
Its the same way as we have cycled the aquariums in the past and they have all been fine although i also spoke to a bloke were i got the fish from and he said it should be all ok.
I would get a test kit and get readings for ammonia, nitrite, nitrate and pH.
The way you cycled your tank was the way for many of years, as this was the only way people knew how to. Now-a-days there is method called fishless cycle, where your tank cycled without fish.
However, I am sorry to say that nutrafin cycle is no good and does not work. It is just another way for them to get your money. To properly complete a cycle, it takes on average 4-6 weeks, if not longer.
Right now you are in what is called a "fish-in", which can be read about here:
http
/www.fishforums.net/index.php?showtopic=224306
What you really need to do is get a LIQUID test kit, such as the API master test kit, and give us readings of what I asked above.
It does not take much of ammonia or nitrite to kill a fish. Ammonia at or above .25 ppm will cause permanent gill damage and nitrite at or above .25 ppm will cause permanent nerve and brain damage. And these will kill the fish. I bet that your ammonia level is above .25 ppm right now if you just started your tank a week ago. In order to know for sure, a water test must be done, and the correct water change must be performed to lower the level to safe level.
You fish may not even show any signs that they are being effected by high levels of ammonia and/or nitrite; these two toxins will even shorten the fishes life, even at .25 ppm of each.
-FHM