Quote:
Originally Posted by deftdrummer
1) If roots are popping out of the peat proceed to plant in your soil mix all the way up to the first set of leaves for each seedling. Keep mild fluorescent light (like you have) over the seedlings for the next few weeks. Refrain from nutrients at this time.
2) Tray cover is not necessary for such young seedlings. Seedlings require O2 flow around leaves and ample aeration of the roots just as any other growing plant at this stage. You will need super high humidity for when you clone that is what your tray / cover setup is for.
3) what is the wattage of your seedling light and what type is it? (fluoro, HPs, cfl, halogen
4) You are going to want to wait until your seedlings in the rockwool sprout out a good bit and have developed several sets of leaves. Do not jump the gun this is an important stage. Make sure there are 2-3 decent sets of leaves before putting the entire rockwool cube into your expanded clay or other medium. Dig out a small indentation from the clay pebbles and place the rockwool cube just so the bottom of the rockwool touches the water level at its highest point in the hydro setup. This will ensure your baby roots will not get too saturated so early. Again, do not use nutrients for a few weeks until they are showing many sets of leaves. Most of all, gauge the plant, when it needs food you will know. Look for the first signs of yellowing or droopage and start feeding if it comes to that point. Right about when you switch to nutrient feeding is when you should switch to your 400W HPS approximately and then its full steam ahead!
Thanks for the reply deftdrummer!