When to turn off drip ring?

I just got the vivosun 4 bucket kit. This system has a drip ring that gets buried in the hydroton.

What is the point of this? I assume I use it until the roots find the water. Do I turn it off then?

Thanks

bobbjoedope said:

I assume I use it until the roots find the water. Do I turn it off then?

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When I ran rails I put in top feed lines until their roots hit the channel then removed them. So I'd turn them off after the roots reach water, just like you thought.