Twinstar LED (S-Line) - SA AdjustableThis new Twinstar (S Line) LED offers a better option for your planted tank. Experience the true colors of your aquascape in it's highest potential. The Twinstar LED offers an optimum range of wavelengths of 400nm to 700nm which is exactly what plants need to thrive and flourish. Model 450SA: For 45cm long aquariums Model 600SA: For 60cm long aquariums Model 900SA: For 90cm long aquariums Model 1200SA: For 120cm long aquariums IMPORTANT: Please note