High light levels at the correct wavelengths for powerful plant growth. Blue and red spectrums to encourage plant growth and flowering. Low energy consumption. Extendable arms. Controller with Dual Channel On/Off LED. Supplied with 4 clamp fixings. 2 year guarantee. Adapter clips compatible with T5 & T8 fittings. Allows easy retro fitting into the vast majority of existing aquarium light fittings.