Qubit Systems offers a simple, calibrated in the software, white LED light for use with a flow-through leaf chamber or DO electrode. Larger LED panels can be provided with a controller or software for precise illumination of plants or algae during growth. Even larger LED panels or bars can be used in growth rooms and greenhouses as growth lights or supplementary lights. For more information on large scale LED lighting options read HERE. Various wavelengths of LEDs are available.