HDI Root Riot Replacement Cubes Options:Root Riot Replacement Cubes - 50 Cubes (20/Cs) Rockwool or have hard water

Rockwool or have hard water where less calcium is needed

A powerful blend of all natural ingredients and 29 different strains of mycorrhizae and beneficial microbes

Precise digital time clock with built-in battery backup

• USB interface provides full compatibility with Autopilot PX1 Digital Lighting Controller

HDI Root Riot Replacement Cubes Options:Root Riot Replacement Cubes - 50 Cubes (20/Cs) Rockwool or have hard waterMinimum Order Quantity of $250. Root Riot Plant Starter Cubes are available in bags of 50 and 100 replacement cubes. Root Riot Plant Starter replacement cubes are pre moistened so they are ready to use right out of the bag. Now comes in a bulk pack too.