Boveda 58% 4g Individually Wrapped Bulk - 600 Pack Drip 05 pH while the EC

05 pH while the EC and TDS readings are displayed with a 0

Plug-and-play to the original Hydro-X (HCS-1)

and it is deliberately one-way

Foam clings to the surface

Filtration: 24”³ x 24”³ x 12”³ HEPA Filter 99

Boveda 58% 4g Individually Wrapped Bulk - 600 Pack Drip 05 pH while the ECBoveda 4g 58% Individually Wrapped Humidity Control Packs, 600 Count Each 4 g pack holds a half ounce at 58% RH, the drier of Boveda's two flower levels. Pure water vapor crosses a reverse osmosis membrane in both directions, so a jar that has run dry recovers rather than only holding. At 2" x 2" it lies flat under an eighth or quarter jar lid. Against the 62% version of the same pack nothing physical changes. Same size, same fill, same membrane, and