Energy-saving hydroponics system could be improved using soilless culture media made of local plant materials in Northeast Thailand. This hydroponics system was developed as a kind of capillary hydroponics system at the Okinawa Subtropical Station of JIRCAS in 1997. Several types of soilless culture media were examined to reduce the production cost of the hydroponics system in this study. Local materials used instead of polyester fibers as soilless culture media were as follows; fresh rice hulls, charred rice hulls, sugarcane bagasses, decomposed roselle stem residues, coconut coirs, coconut fibers and their mixture. The use of the medium consisting of a mixture of coconut coirs and charred rice hulls led to a high yield of tomato and enhanced the growth of melon. Melon produced fruits on coconut coir medium.