as soon as the first "true"set of leave's appear you can put you're hid on them,use a fan on them (sprout's)to strengthen the stem's an keep them cool under the intense light....bonbon
bonbon Reviewed by bonbon on . when to start? first time grower.my seeds are starting to turn to sprouts.they are in a small covered greenhouse,with a 400w hps light,when should i put them in my flo an ebb setup? {i am using rockwool cubes for both seedlings and the flo an ebb sys.}thanks. Rating: 5