Roddy....I used these as well...they are coated and didnt seem to conduct heat..My concern was the squares was too small and buds got fat inside :giggle:..
its two metal grates zip tied together from this store i work at. i used chains for the light and the screen so i could adjust the height. i thought it would be kinda hot too but since its painted white it doesnt seem to be a prob. and im really not sure if its gonna damage them where they touch, i gues ill have to wait and see.
cool you will be fine..Mine was done with the school ocker shelfs..the squares was only 1-1.5 inches..lol...gonna pull up my milk crate to :watchplant:
this was my first idea, i put this one up super last minute tho...i think with my next grow i will have less plants (cuz i got 12 and there packed in my closet), and have a better screen (that will be up much earlier in the plants life). ive heard of people using hemp twine and other stuff is there any thing i should look out for thats better or worse?