Here's a step by step I found online years ago for a friend
Cloning Preparation.
Have your rooting medium (rapid rooters or rock wool) soaking in 5.5 to 6.0 pH water for a minimum 12 hours.Ensure you have enough cloning gel to complete the processSterilize a pair of scissors or snips with alcohol and a flameSterilize a razor blade with alcohol and a flameHave a cutting board or hard surface were you can cut the clones with the blade as in step 6. This area should also be sterilized with alcohol.Have a spray bottle filled with 5.5 to 6.0 pH water for steps 9 and 10.Have a container available and filled with 5.5 to 6.0 pH water for steps 3 and 4.
1. The absolute best place to take a clone, I have found is from the very top of the plant. I usually count 5 nodes down and cut just above the 5th node. This also serves as topping your plant.
2. Once you have cut the clone from the plant, cut the off the lower 3 nodes with your scissors leaving a slight nub, about 1/8" to 1/4".
3. Place the clone into the container of water to prevent an air embolism.
4. Continue taking clones and placing them in the container of water until you have all that you need.
5. Using the razor blade, safely cut off the remaining portion of the lower 3 nodes as close to the main stem of the clone with out damaging it.
6. Make a 45° cut about 3/8" to 1/2" below the lowest node.
7. Dip the lower portion of the clone into your cloning gel making sure that you cover about 1/2" above the lowest node.
8. Proceed to slide the clone into the rooting medium making sure that the lowest node is completely inside. That lowest node is what allows the rooting to commence much faster than normal.
9. When all clones have been taken, mist them generously with the water in the spray bottle.
10. Close the vent holes in the humidity dome if your model is similar to this one and mist the entire inside with the spray bottle as well.
11. Place the lid onto the tray and tape it down to ensure it will not fall off.
12.Proceed to place the tray of clones into a black plastic trash bag or in dark warm place for the next 24 hours.
13.After 24 hours has passed place the tray of clones under indirect light for 1 day. I have found that T5's work best for this.
14. I have found it best to take the humidity dome off the tray every day for at least a minute or so to allow the clones CO2. This is usually about how long it takes to water them.
15. On day 7, open the air vents on the top of the humidity dome for the rest of the term.
16. Feeding schedule should be plain 5.5 to 6.0 pH water for the first 3 days. Then 1ml/ Liter hygrozyme and water, 5.5 to 6.0 pH, from day 4 to end of term.
17. After 10 to 12 days the clones should be ready for transplant. After day 9 it would be a good idea to check each clone for roots.
18. Clone ready to transplant.