Hydroponics is a soil-free option of gardening where the plants absorb nutrients directly from the water (not soil). Plants are planted in non-soil growing mediums such as LECA (ceramic balls), Rockwool cubes, peat moss, pumice, perlite, and coconut coir. We have comparisons on which is the best growing medium for your situation. We have information for beginners to expert level. In addition, we have reviews on the equipment you’ll need to start your own hydroponics system.