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The opaque white PE blocks light inside the line
the temperature of the grow medium and also the EC within the grow medium
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and increased resistance to stress and disease in plants
Boveda 58% 2-Way Humidity Control Packs 320g Valves The opaque white PE blocksBoveda 320g 58% Humidity Control Packs Hold Five Pounds The largest pack Boveda makes, one 320 g unit covers up to five pounds at 58% RH. The job is a tote or a large curing vessel that would otherwise need four or five smaller packs scattered through it. One unit does it instead. Moisture crosses a reverse osmosis membrane both directions, so a tote that has run dry recovers instead of just holding. 58% is the drier of the two flower levels, which is
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