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11-30-2007, 08:59 PM#7
Senior Member
General Hydroponics Power grower Eco?
0-1999
Originally Posted by whomikejones
LOL That ain't how it works. You need a specific calibration solution for your tester. The TDS meter measures how much stuff is in your water/solution - everybody's water is different. Originally Posted by whomikejones
PC :smokin:
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