I kept glofish tetras for over 2 years in a 15 gallon column tank. Long story short, had a disaster and all fish died. I am now trying to start over. I have been doing a fishless cycle, using fishfood only to build ammonia. It's been 7 weeks and I am still at the following: Ammonia 2-4, Nitrites 0 and Nitrates have been at 0 but finally rose to 5 just today. I've done a few 25-30% water exchanges and have added a small pinch of flakes a few times. I am NOT having trouble getting the ammonia- just can't get it to move on. I currently have a Aqueon Quiet 30 filter, heater is set at 76, also have an airstone. I kept and am still using the old seeded filter. Currently have a variety of live plants (5 total). I've spent the time researching forums on cycling a tank and have a fair understanding of how it should work but it seems something should have changed by now. In the past I did the cheats and added bottled bacteria- Quick Start, etc This time, I wanted to do it right and do an actual cycle but this is frustrating. Any help would be appreciated!