于 2003-12-30 16:36 I have tested the PH value for my FOT and noticed that it is consistently low at the level of around 7.9 to 8.0. I tried to use PH buffer to increase the ph value but was not successful. Do you have any idea how I can increase the ph value to a more reasonable level? I was told that the ph level for a salt fish tank should be around 8.4-8.5. Size of my tank is 40x20x30 and NO2 level is zero. Thanks in advance for your advice.