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The Bluelab pH Probe has a double junction reference which provides a longer life than many other pH probes and is a gel filled non-refillable probe
and hydrogardens
or a lemon tree on the deck
Heavy duty and reusable
Oasis 104CT HORTICUBE SINGLE SEED TOP GROOVE 1.25" 20/CS (2080) lighting The Bluelab pH Probe hasA specialized media density and fine cell structure promote faster, stronger root growth. In addition, the fine cell structure and drainage properties provide uniform moisture and hydroponic nutrients throughout the media whether you use overhead irrigation or sub irrigation. Best for (crops): lettuce, herbs and other vegetables
