09-06-2009, 12:00 PM
| || | Question about Nitrates
I have a 5 gallon tank that is planted (green wendtii crypt, amazon sword, and Brazilian pennyhort). Over the past two weeks, my water parameters have changed some. I have been having my nitrate levels change. My Nitrites are still staying at 0, my Ammonia is still at 0, and my pH is still at 7.4-7.6 (a little high I know). But my nitrates usually stay at 5 ppm, but within the past 2 weeks they moved to 10 ppm (and have stayed there). I have my betta and 3 otos in the tank. I don't overfeed, my fish will eat right away, so there is never any extra food in the bottom.
I was wondering why my nitrates increased out of no where. I know if they are below 25 ppm they are fine...but is there a way to make them decrease? I've tried water changes and it doesn't change it. Could it be my tap water parameters changing?