Dear Grasscity Growers, I haven't looked around at other posts... and I'm sorry about that. I'm just throwing my question out and am wondering if anyone knows about it. I guess I'm just a little stressed right now and am unable to look for any posts that might have information about this. The question is... Do electronic pH meter pens work under CFL lights? Somewhere on Grasscity forums I glanced over a post that said that they didn't. That they go all crazy under CFLs. My nutrient solution is too dark to use the GH color indicator vile for testing the pH. And pH test strips just don't work for me. I need to get a pH pen and am thinking that maybe I can take a sample of the nutrient solution into a different room to test the pH. Any help greatly appreciated.
