Dual 1/2 inch random flow eductor /generator with 1/2 inch bulkhead for diy aquarium

3DReeF 1/2 inch Bulkhead with 2x 1/2inch Flow Generator Locline unit .It generates a Random Flow pattern in your aquarium..Suited to install with 1/2 inch hole in the glass and a 16 mm internal hose diameter. Easy to install. Available in 3 main colours Black,Neon green and orange.Neon green colour glow below Uv light..