Hydroplex is a bloom maximizer product that is designed to work with your regular nutrient formula for maximizing “big, brilliant, blooms.” As such, it’s most effective to use during flowering phase. Hyrdoplex advertises a broader range of amino acids, trace minerals, and select vitamins than have the average PK boosters out there. So by using this, you will not need to rely on a regular PK booster as Hydroplex has the baseline PK levels already covered. Hydroplex focuses on helping your plants to resist external stresses, allowing them to increase enzyme, chlorophyll, and the production of essential oils and sugars. The product has noticeably low dilution ratios of of only 2-5ml per gallon, so you don’t have to use much each time and can get good value out of your stock over time. Reportedly works well in conjunction with any nutrient line out there.