They call them pot risers. But they are too expensive on Amazon. I'm cheap. I only bought like three, I got round 12 pots, the rest are sitting on plates turned upside down, real cheap at thrift store. Can use all kinds of things like plastic flower pots upside down. Cloth pots are great once after you get them plants roots filled out.
About watering in big pots with young small plants. Water lightly, led lights take longer for pots to dry because the dont make much heat. Once plants are large enough to water to runoff, I use a wire rack placed atop a tub to catch runoff. Really learn when pots are getting dry lifting them out of tent. Inside growing is new to me and I made lot of mistakes.
