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04-20-2007, 11:59 AM#6
OPSenior Member
A few simple questions on Cal Mag and ph meter
Thanks everyone! I ordered the quart of the calmag. Weedhound- the ph cker I got says two point calibration. Will that mean I will need two solutions? (Say a 7 and a 4)?
:jointsmile: Bree
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