Tank Stats20 gallon tall hexagon tank (24 inches tall for reference)Sword plants, and some Anubias plants, nothing fancy.A single male bettaAmmonia: .25-.5, Nitrite: 0, Nitrate: 0Here's the deal y'all. We decided to do an in fish cycle because bettas are fairly hardy and we want to get fish in the tank before I have to leave for college again. I know this is a super debated topic, I usually only do fishless cycling, but this is a betta who is super hardy and I always make sure to use prime to keep the ammonia from hurting him. Anyways, the tank just will not cycle. It's been at a steady .25-.5 ppm of ammonia for 2 weeks now. Nothing else has ever showed up in the tank, and I don't understand why. I've tried adding filtered media from my tank into the tank (i.e swishing it in the 20 gal water). i've tried Stability, I've tried adding in lots of food. I don't know what else to do. I will mention the filter itself already has a ton of gunk on it. lots of bacteria is already built. I just don't understand how it's there if ammonia is still showing up, and the tank never showed any nitrites/nitrates before... Please help!