Platinium 100 Series HydroStone food-&-water-storage Two-way humidity control means the

Two-way humidity control means the pack both adds moisture when the environment is too dry and absorbs moisture when it's too humid — actively maintaining the target 62% RH rather than simply drying the air like a one-way desiccant

teamed up to blend the perfect ratios of coco coir pith

or day and night operation

A nutrient additive containing macro and micro-nutrients

Platinium 100 Series HydroStone food-&-water-storage Two-way humidity control means thePlatinium HydroStone can be utilized for growing in both rockwool cubes and square pots. Available in 6, 10, 15, and 30 site setups. These systems include a reservoir, tray, tubing kit, pump, drippers, and easy access reservoir lid. Measurements 38. 5''x38. 5''x11", Reservoir 21. 1gal Number of sites: 20 Compatible with: Pots 6L 7''x7''x9''; or Cubes 15x15