Not so sure. I just added the same amount of ammonia every day and halved it when the nitrites spiked. Not sure about that article either. When my cycle was done I stocked my tank in one go. The point with fishless cycling is that you can do this. Even fully stocked your fish are unlikely to produce ammonia to 5ppm, so if your bacteria can consume 5ppm in a day then they can easily service a full load of fish. Also his cycle times seem rather too short, especially his unplanted tanks. Why, if using the same method, would it take weeks to cycle a 6G planted (like it did mine) but only days to cycle a 6G unplanted? In fact it should take roughly the same time no matter what the tank size and whether it is planted or not. Adding mature tank water will do nothing to speed up a cycle. His method seems slightly out as well.