failure

I rinsed the dirt before putting it in and it sat in the tank for a day till I started aqua scaping. I put plastic over the substrate to hopefully not disturb but my fear came true and I created mud.

I have had fish for about 2 years and they usually all died after 6 months. I always got 5 livebearers at a time for a 20 gal tank. Whenever I clean it out, there is a bunch of poop and particles that rise from within the rocks, however my ammonia levels have remained at 0, as well as basically...

I have had a tank for about a year now and I can't get my livebearers to stay alive. They keep getting sick even though ammonia, nitriate, and nitrite levels are 0. Temperature is 81 F and ph is 7.7, right where the mollies need it. The tank is 20 gal, I usually buy 4 or 5 fish at first. I have...