tools for keeping houseplants in passive hydroponics system without soil with water level indicators, expanded clay pellets

tools keeping houseplants passive hydroponics system soil water level indicators expanded clay pellets copy space houseplant potted plant aggregate baked ball botany brown chalk fertilizer flower pot gravel growing plants growth house hydro hydroculture indicator insulation irregular isolated no object organic subirrigation pebble pebbles pelleted pothos propagation roots semihydroponics tool regulation root rooted cutting