MY TANK OBSERVATION
  
PH       NO2     NO3    KH    GH
6.4        0            O         6        6
 
THE PH ARE HIGH AND THE NITRATES ARE VERY LOW , THE PH CAUSES THE PLANTS TO DIE BECAUSE THE NITRATES ARE LOW AS THE RESULTS MY PLANTS HAS YELLOW LEAVES AND ITS NOT GROWING WELL, THE WATER QUALITY IS GOOD AND THE WATER IS SOFT.