Grow1 Collapsible Reservoir - 200 Gallon pH Adjusters 62% Two-Way Control: Adds moisture

62% Two-Way Control: Adds moisture to a vault that has dried out and pulls it back when the lid comes off

These packs are designed with patented technology that can either release or absorb moisture

Generous Volume: With a volume of 1

The largest pack Boveda makes

the concentrate is displaced into the mixing chamber

Grow1 Collapsible Reservoir - 200 Gallon pH Adjusters 62% Two-Way Control: Adds moistureGrow1 Collapsible Water Tanks are here to revolutionize your water storage needs! Made of a flexible, heavy duty, PVC material, these water tanks are capable of collapsing to provide an easy means of cleaning and transportation after use. Grow1 collapsible water tanks are a great alternative to troublesome solid, space consuming reservoirs that are difficult to transport and relocate. Includes a pre installed removable top straining screen, 3 4'' tap