Here is an example of how low cost and easy a cloning bubbler can be if one is creative.

I took a small plastic "to-go" cup from a local restaurant, wrapped it in aluminum duct tape to make it lightproof, cut a hole in the top for the 1/2 ID vinyl tubing and taped it in place. I stuck a 50 cent airstone in the cup and hooked it up to an airpump.

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The cutting was from my Black Dominas in flower for 5 weeks (see sig for grow log), and was going in the trash since it was undergrowth from my SCROG. Instead I took it and threw together a cloner and after 2-3 weeks it has roots.

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The lesson here? If you feel you can't clone, then you need to keep trying. You might just surprise yourself.