Grodan 1.5 in Starter Mini-Blocks MM40/40 1.5 in x 1.5 in x 1.5 in (3 Strips of 15 or 45 ct) (50/Cs) CO2 tanks are shipped empty

CO2 tanks are shipped empty and do not contain CO2

It is manufactured from durable UV protected HDPE plastic

It also includes four different colored cloning collars

you may also see the installation video) and simply hang your new Quest dehumidifier in your desired location—relieving your much needed floor space

Grodan 1.5 in Starter Mini-Blocks MM40/40 1.5 in x 1.5 in x 1.5 in (3 Strips of 15 or 45 ct) (50/Cs) CO2 tanks are shipped emptyMini 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.