Grodan Rockwool/Stonewool Delta Starter Mini-Blocks Options:Grodan 2 in Starter Mini-Blocks MM50/40 2 in x 2 in x 2 in (2 Strips of 12 or 24 ct) (60/Cs) so pre-treating the water and

so pre-treating the water and removing them is crucial to a properly operating filter system

Apply at the first sign of budding and through flowering and fruiting

Large LCD display

and is available in 5500K color temperature

Grodan Rockwool/Stonewool Delta Starter Mini-Blocks Options:Grodan 2 in Starter Mini-Blocks MM50/40 2 in x 2 in x 2 in (2 Strips of 12 or 24 ct) (60/Cs) so pre-treating the water andMini Blocks sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini Blocks are individually wrapped in white plastic to minimize algae growth. Remove wrapping and transplant into any loose media such as Grow Cubes or coconut fiber or leave wrapping on and set on top of a larger Gro Block. Packed in easy tear away strips, labeled with instructions.