Hi, please help. I am a bit of a newbie when it comes to fish tanks, as i have only ever changed water and fed them.
My red tailed black shark went grey, and his eyes got cloudy, so i was advised to check the levels of ammonia, nitrate, nitrite, and PH. All were fine apart from nitrate, which was well above 80. I did a 50% water change, and added some stress zyme as i was told this would help. I tested again the following day, and no change. I then did another 20% water change and added a "Nitra-zorb" bag to my filter. I have tested the water today, and, you guessed it....no change. My fish look really poorly, and i feel really bad. Please help me if you can.
My red tailed black shark went grey, and his eyes got cloudy, so i was advised to check the levels of ammonia, nitrate, nitrite, and PH. All were fine apart from nitrate, which was well above 80. I did a 50% water change, and added some stress zyme as i was told this would help. I tested again the following day, and no change. I then did another 20% water change and added a "Nitra-zorb" bag to my filter. I have tested the water today, and, you guessed it....no change. My fish look really poorly, and i feel really bad. Please help me if you can.