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12-09-2009, 02:34 PM#3
Senior Member
EC vs. TDS???
I thought it all came down to Parts per million.
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Forum Jump :
Hydroponics
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- Philosophy
- Books and Literature
- Experiences
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- GreenGrassForums Lounge
- News, Politics and Legal
- Sponsor Forums
- Medical Marijuana Methods and Strains
- Growing
- Medical Marijuana
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