Grasscity - Black Friday Sale - up to 70% Discount

Good Video about ppm and what it means

Discussion in 'First Time Marijuana Growers' started by Tayanissa, Nov 3, 2010.

  1. [ame=http://www.youtube.com/watch?v=nkLaRE6mz0M&feature=related]YouTube - Nutrients And TDS Meter[/ame]
     
Loading...

Share This Page