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calibration solution for High testers
Deep or Shallow Water Culture
SGS System Certification
a 4" carbon filter
HI50036 Quick Calibration Solution (3 sachets)
Mother Earth Perlite #4 Size:12 Qt calibration solution for High testersMother Earth Perlite #4 measures 1 inch, and is the largest perlite on the market. Mother Earth Perlite is naturally occurring siliceous rock that expands up to 20 times its original volume when heated to 1600 F. This kilning process is very similar to popping popcorn and produces a growing media that is sterile and has a neutral pH of 7. 0. The exceptional physical properties of this perlite make it tops in the perlite world for adding porosity to
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