This is my first post here, but I could really use the help. About 2 months ago I received an aquarium and started everything up. Although I may have thought I had, I didn't get the tank cycled properly before adding fish. My problem now though is that I have had somewhat off the chart ammonia problems... I don't exactly have a high fish load, if anything I'm understocked a bit. I have enough filtration to filter all the water in the tank 9-10 times per hour. I've kept up with decent sized water changes, not too large in the beginning but when the ammonia tests were showing at 4ppm and then 8ppm and beyond I started doing 30% changes every few days. The fish seem to be surviving and not really having many problems, no deaths yet. I have been using an ammonia neutralizer, and for a little while I had an ammonia absorbent (zeolite I think it was) in the filter. My first question, will high ammonia kill my beneficial bacteria and put me back to square one? Its a 50 gallon with 2 Angels 2 Otocinclus and 1 Common Pleco (currently about 2 inches long). Also how long does it take a dechlorinator to completely dechlorinate the water I use for water changes? If I fill a bucket put in the proper amount (or even a bit more) dechlorinator, then add it directly to the tank, will that kill off some of my biological filter? Any help, comments or questions are greatly appreciated!