Sooo thankfully to this site, I have a 29-gallon tank that I am doing a fishless cycle on. I have had a used filter (thanks to a friend) that I popped in a few of days ago... Yesterday I did a 10% water change and a couple of hours later I did a water test on it, and then again this morning. I DID use 5-in-1 easy strips and ammonia test strips. Nearest pet supply is far and this is all I could obtain locally. My readings this morning showed ammonia all good, Nitrite at .5ppm, Nitrate 20ppm, GH 300 ppm, KH 180 ppm, and the pH 7.8-8.4. WAAYY to high for the fish I'd like to get. I know water hardness and pH go hand in hand. I did add a bigger filter (although I left the used one in the bottom of the tank) and some new floating fake plants but I rinsed them really well in very hot water. I do have city water so I'm confused as to what to do to lower my pH. I have these Tetra Correct pH tablets, but when I was setting it up I was told not to use chemicals to correct it...I have yet to get fish because I'm waiting for the right water parameters. What am I doing wrong? How can I fix this?