Hello, so i just got my first fish tank about a month ago. my knowledge was extremely limited when it came to have an actual tank not just for goldfish. i went to my local fish store and received some incredibly awful advice from a disgruntled employee and after some research on my own i figured out what the Nitrogen cycle is. the tank is 20 gallons and has a penguin 150 filter in it and a heater as i intend on keeping tropical fish in it when it gets cycled. after about a week of running the tank i went to get some supplies from Pet-co and the fish guy told me it would help to have some good fish in there so i went home with 4 Tetras. within 24 hours one had already died after he was swimming somersaults in the tank ( he was later renamed "Torpedo Jim") soon the others followed within a week and were all dead. i have been using the API Stress coat to start my cycle and i only had the test strips to test my water until a few days ago and i bought the API mater kit. after testing my Ammonia my level read at 1.0. i just started doing water changes aswell. i started out with a 50% water change (as after about 3 weeks that was the first time it had been done) and about 5 days later did a 20% change again. its been a little over a week and my Ammonia levels are still reading the same 1.0 my question is am i doing anything wrong? i haven't put fish back in the tank since they first batch got flushed. but from what iv read the longest part of the cycle is the Nitrite to Nitrate part and the Ammonia doesn't take as long. is there anything i can do to help the process along. or at least not impede it further? any suggestions would be great thank you