Aquaponics System, Engages students in ecology, biology, earth systems, math, history and literature while pairing fish and plants in one integrated system, With Removable lock down plant tray cover, Aquarium cover, Plastic net pots and grow medium, Filter sponge, Pump
Bell Demonstration Model, All The Components Of Electric Bell Are Mounted On A Large Panel. Allwiring Is Visible And Parts Are Of Large Size. Operates On 4-6 Volts Dc, Mounted On A Large Panel, All Parts Easily Visible, Rigid Constructions
List View
Easy View (new)
