when I finished fishless cycle the reading says 0 ammonia, 0 nitrite, bunch of nitrate. so I took out 85percents water of the tank and filled up the water with prime and stability. Then result changed to 0.5 ammonia, 0 nitrite, 10 or 20 nitrate. Do I have to do fishless cycle all over again or do I just do more water change or do I start putting the fishes in? what should I do I am completely confused..