Is there anybody here besides me using indoor or outdoor hydroponic units for gardening? I love my units! No weeding! I have 3 outdoor ebb-and-flow units that give me 52 sq ft of growing room on our deck. I grow basil, melons, bok choy, winter squash, peas, leeks and green onions, dwarf corn, tomatoes and cucumbers in them depending on the season. I circulate the nutrient-water every 2 hours for half an hour, via timer. Indoors, I have a 8-hole Dutch Bucket unit with tomatoes in it. This unit runs constantly with aerated nutrient-water. I use rockwool cubes in the ebb and flow units, and perlite in the Dutch Buckets, as the growing medium.