I am growing my plants in clear plastic bottles for now ! I started them out , what turned out to be weak fluorescent grow tubes ! Because of this , the stems elongated and 3 of them could not stand up on their own! I transplanted them into clear plastic bottles and used perlite/vermiculite medium ( inert ) to hold the plants upright ! The medium is close to cotyledons ! My plants are now erect and doing well under my new LED lights ! They are healthy looking and we are happy ! My question is my roots are exposed to the 1000 watts of light ! Is this harmful to them ?