Hi all (again) I thought my fishless cycle was almost done. My tank is currently this: 225 litre Ammonia 0ppm Nitrite 2-5ppm (can't tell difference) Nitrate 10ppm (maybe more, hard to tell) Eheim 2217 API master test kit liquid Started cycling 5th march with fish food, then moved to dr Tims 3-4 weeks ago. Have done multiple water changes 3 weeks ago to get nitrite spike down at the advice of some helpful ppl on the forum. If I add 2ppm ammonia, 12 hours later my tank reads 0. But nitrites don't go down for 2-3 days. I've only been dosing ammonia when the nitrites get down to under 1ppm (which is days) since I heard that a couple of days shouldn't starve your bacteria. I used seachem stability for 9 days after the first week nitrite wasn't going down. Haven't used it again but should I? I've been at this point where nitrites aren't going down for weeks now and I'm feeling very disheartened. Please tell me if it normally takes this long and if not what to do. My filter media is coarse sponge>ceramic noodles>fine sponge stuff. Should I added more biological media??