You can build a simple DWC cloner for like $30 and never have to use any medium again to root clones. All you need is 1 1/2 gallon tupperware, some air stones, tubing, air pump, and duct tape.
Just cover the container in duct tape so no light can get in. Cut as many 1/2"-3/4" holes in the lid as you need clones. Cover the lid including holes with duct tape.
Fill the container with water, put the air stones in the water with the tubing going through the lid so it can still close. Plug in your pump and let your water start bubbling.
Cut a small "X" in the duct tape over the hole you want to put a clone in and put the stem through the tape up to the first set of leaves left on the clone. If the clone sits at an angle don't worry about it. As long as the bottom of the plant is happy, the top will be happy as well.
Simply add water as needed to the cloner and you will see roots in 5-14 days. You can use tap water or RO water. The RO water will root faster, but you can get away with tap water. All you will have to buy ever again is duct tape to cover the holes.
To remove the clones, cut the duct tape around the hole, in a square just bigger than the hole. Peel the tape up and cut off with scissors. Then simply wiggle your clones out of the holes and pot them up into soil or what ever medium you use to grow.
