This kit combines two Super Plug kits with propagation trays and inserts, two tall propagation domes, one 4’ HO T5 fluorescent light, and a customizable stand that accommodates two HO T5 strip lights (if you need an additional light, please purchase one separately). Super Plugs are a biodegradable starter plug composed of organic materials that produce beneficial microbes to colonize roots for healthy seedlings and clones. Customize the versatile ‘L’ stands for an easy way to suspend the T5 light above your propagation dome.  Use the tall side of the ‘L’ stands for use with a tall propagation dome (included) or turn the stands on their short sides for use with a short propagation dome. Purchase the short dome separately. Add a heat mat for excelled growth.