Boveda 2-Way Humidity Packs 58% - 67 Gram (Pack of 100) AC Infinity Cloudline Quiet Inline Fan Water Soluble General Purpose is

Water Soluble General Purpose is an all purpose

It features two analog inputs and four digital outputs

Quick Cal solutions to calibrate pH and conductivity all at once with a single solution

Simply mix with water and apply around the base of each plant

and essential microelements

Boveda 2-Way Humidity Packs 58% - 67 Gram (Pack of 100) AC Infinity Cloudline Quiet Inline Fan Water Soluble General Purpose isBovedas patented 58% humidity control packs regulate moisture content, keeping the contents of your containers at the perfect desired level. They dont need any activation or maintenance. Just place them in an airtight container with your items and Boveda technology will do the rest. Only Boveda responds to any atmospheric humidity conditions inside a container by adding or absorbing moisture as needed to maintain the predetermined relative humidity