I started Dr. Tim’s fishless cycle one week ago with 4ppm ammonia and a small bottle of Dr. Tim’s bacteria (I have an IM 15 AIO cube). The bottle said it treats up to 30 gallons. Now, one week later, I still have 4ppm ammonia, 0 nitrites, and 0 nitrates. The pH has been stable at 8.2. The temp has been stable at 77F and I’ve kept the light off. Dr. Tim’s protocol suggests that I should be ready for fish soon. Is this normal that it’s taking this long to see any progress?



Just give it some more time.