It keeps the soil moist, the roots can use the whole container and grow right up to the surface, also helps maximize the lumen's by reflecting the light back towards the plant.
this is just a quick question...what do you plan to do when the stalks get too fat? everytime i try to cut CDs, they shatter and blow shrapnel everywhere. GL if they cut anything
The 5/8" hole is large enough for medium sized plants, i havent had any problems yet.
If you wanna grow them larger just place a few in the pot, like in the second photo.
this is just a quick question...what do you plan to do when the stalks get too fat? everytime i try to cut CDs, they shatter and blow shrapnel everywhere. GL if they cut anything
I've never done this CD thing, but I would imaigine if you took a couple strips of duct tape and put them on the cd before you broke/cut it the shrapnel wouldn't be too bad.
might try this with my 1st grow. although i remember when i left a cd on my window sill once, it damaged the cd and burnt it. so i dont know how much heat they can stand before they come non-reflective if u know what i mean