When transplanting, follow these simple steps
1. Prepare the new medium for use – Add any desired amendments and/or beneficial microorganisms. Wet the medium with the same level of plant food that you used to grow the plant until this point (you may wish to add a drop or two of B1 vitamins to the solution). Make sure the soil is completely saturated with your water-fertilizer solution, leaving no pockets of dry soil but not dripping wet either. The idea is to help moisten and settle the medium, lowering the risk of transplant shock.
2. Fill the growing containers about halfway to two-thirds full with pre-moistened growing medium. Leave a slight bowl shape at the bottom for the new plant.
3. Gently remove the plant from its previous container. Place your hand over the top of the container, keeping the stem between the thumb and fingers. Turn the container over and carefully ease it off the plant. If the grow media is hardened or stuck, you can use a butter knife to help loosen it.
4. Carefully loosen the root ball with a finger or a fork, but be careful not to cause any root damage. Tease out the roots and unwind circling roots. If you find any dead or damaged roots, use pruning shears to trim them off.
5. Center the plant in the new, larger container, making sure it’s upright and that all the roots are pointing down. Plant it at a depth of half an inch from the top of the pot, and no deeper than the top of the root ball. If you plant it too deep, it will rot, and too high, it will dry out. Gently push soil or soilless media around it. Make sure the top of the soil or soilless media is intact and isn’t cracking apart in lines, exposing the roots.
6. Water the plant lightly with a fertilizer solution until the water runs out of the bottom of the pot. Allow the pot to drain completely before placing it in its permanent location. Make sure the soil is saturated, but not soggy. This will help settle the media and give it good contact with the roots.
7. After transplanting, your plants will need time to adjust and re-establish their root systems.They must get sufficient water, but not yet the full amount of light. Keep the light schedule the same as it was in the previous phase for one week (example: if moving from vegetative to bloom phase, keep HID lights on an 18 or 24 hour light schedule for the first week before adjusting to 12/12. Also raise lights at least 4-5 feet above the plant for 1000-watt bulbs and 3-4 feet for 600-watt bulbs). After one week, the plants can go under the full light of the HID lamps.