GH MaxiGro 16 lbGH MaxiGro 16 lb MaxiGro and MaxiBloom are extremely potent, stand alone, water soluble, dry concentrate nutrients. Complete in primary, secondary and micronutrients, pH buffered MaxiGro and MaxiBloom will provide superior results when used with a wide variety of crops in both hydroponic and soil based environments. MaxiGro encourages growth of seedlings, cuttings and stimulates rapid growth through the vegetative growth stage.