i am growing hydroponic and i have 5 plants and the light i got burnt them i had them 18inches away from a 400w MH and this is what they look like the next morning... So today i moved them from 18" To 25" I Hope It Still Don't Burn Them what can i do to help them heal from last night and here is a pic of my fan i got above my light ?? Please Help Me Before All My Money Is Lost..
You can't do anything but let them heal. I keep my 400w MH 3ft away when they just sprout. Once they mature a little and just begin to stretch I get the MH 2ft from the tops for the next two weeks. From there you should get them as close as possible.
Like the guy in your other thread mentioned. A fan between the plant tops and the light will probably benefit you. Will strengthen their stem and hopefully lessen the heat they feel from your light