Hello Guys, i will be feeding my ladies with distilled water threw out my grow but i was wondering what is best water to use to calibrate my ph meter? i have the 2 powders to calibrate. Do i use Tap Water, Spring Water or the distilled water? Thanks in advance for any tips from u guys!! Sent from my iPhone using Grasscity Forum mobile app
You have to use buffers. Usually 4-7-10. Some cheaper meters will use 2 or even 1. Say you have buffer 7 stick your meter in and you'll use a tiny screwdriver to adjust your setting to match the buffer. Oh crap to answer your question use reverse osmosis or distilled not tap. You'll add the powder to a known amount of water then calibrate to those two u mixed. Do it often to.