my question is how do you test your PH levels. i have just started my first grow and am using a basic PH colour card. would i BE ok to use this through my grow or will i need to invest in a digital p PH meter for more accurate PH readings. thanks for any help
Not sure if your soil or hydro, but I bought a ph stick for my hydro set up(35.00) due to needing a more accurate PH, and realized that the paper method has way to much room for interpretation.
