So i started my tank cycle on the 23th June. On day 4 my results were Ammonia - 0.25 ppm Nitrite - 1ppm Day 7 (29th June) Ammonia - 0ppm Nitrite - 0ppm So i gave it a full dose. But now I'm unsure. Do i treat this as dose one or two? As my reading is Ammonia - 0.50ppm Nitrite - 2-5ppm (higher than two not quite 5 though) Nitrate - 80ppm My tapwater reads Ammonia - 0ppm Nitrite - 0ppm Nitrate - 40ppm High pH - 8.1 What must i do! I dont want to add more Ammonia incase I'll mess it up. So heres where you guys come in handy. I haven't used any mature filter media. However when my tank was stripped down and emptied i never cleaned the filter out. All the sponges ect and water was left in it. I did empty the water when I decided to take it back on about 2 months later. Would my bacteria have survived? If so then the majority of the filter media is 2+ years old and one sponge is 7+years. Perhaps this has sped things along?