Quote:
Originally Posted by gr8nguyen1  i have a kh test kit that measures in whole numbers i.e 1,2,3,4,5,. the gh test kit measures in ppm. so how can i tell which one to go by my water parameters for hardness are kh 6 and gh 130....i'm a little confused. please help clarify. |
Your GH kit may be expressing hardness in terms of ppm CaCO3. 130 ppm CaCO3 is fine. See chart in my book on page 185. So I would scratch water hardness off as the cause of your problem.
If you set up a new NPT, I would post pictures on APC as you go along. Sometimes NPTs can be sabotaged by something as "innocent" as an airstone that degasses out all CO2.