Power Active is a CROP SPECIFIC culture of beneficial bacteria that are known to give increased growth when associated with the roots of crops. HERE’S HOW IT WORKS: These bacteria have been isolated and cultured specifically for hydroponic systems and crops under HID lights. Every millilitre of culture contains millions of bacteria ready to start work in your crop IMMEDIATELY. Experience shows that these bacteria make nutrients more available to the plant’s roots. They are able to displace root disease organisms and synthesise hormones and vitamins. These hormones and vitamins are available to the plants as the bacteria colonise the roots creating cleaner systems, increased vigour, healthier roots, stronger stems and increased yields.