6″ x 6″ x 6″ Growing blocks/cubes with 1-1/2″ hole for smaller cubes used for growing very big plants.
These work best with a drip system. If you use a flood system, the top half can dry out quickly and lead to salt buildup, so in that case rinse with water or Clearex often.
The blocks are individually wrapped in plastic on four sides to hold moisture and stop algae growth. The base of each block is grooved for drainage. Holes in the center for the 1.5 inch cube.
Available for order per unit and in cases of 48.