How necessary are the autopots system root control discs and pot socks for it?

The123321

Well-Known Member
I am using the autopots watering system with smart pot fabric pots. I have been using a pot sock on the outside of the pot with a root control disc on the inside of the pot facing up on there.

It gets a little expensive buying those for every plant so I looked for a way to buy root control paper in larger quantity to lower the price but have not found it online. Does anyone know of a less expensive way to do it? Do you use the root control discs and or the pot socks with your autopots watering system for it? I wonder how necessary it is for it on there.
 
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