PH solution shelf life

Discussion in 'First Time Marijuana Growers' started by db805, Jun 7, 2009.

  1. I am a couple weeks away from starting my grow in a hydro system and was doing preliminary water testing and my PH test showed my water to be well, BLUE. Not really sure what that meant on the color scale but could the solution have gone south. I'm letting the water sit to alleviate the chlorine and will check again in a couple of days. Any thoughts on the solution though? I'm planning on picking up a meter but I'm just getting started with what I've got. thanks
  2. I'm not sure what the shelf life is on pH test solutions, but I have an old bottle that reads pH9 is light blue, pH10 is dark blue and pH 11 is purple. In any case, don't trust the results. Take a sample to a pet store (fish store specifically) or a pool/spa store and ask them the pH, or buy a new liquid test kit ($5-7 I think) if you can't afford a meter yet.

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