GPF is a premium lower molecular weight humic acid that plays a vital role as a chelator of essential minerals and all natural compounds allowing them to pass through cell membranes much more efficiently. GPF plays the same role as GPH but can be used in hydroponic or re-circulating systems.
• Currently not for sale in California.
• Click on the video icon to view GPF Uptake product overview video
• For Hydroponic applications. *When using soil applications we recommend GPH Uptake instead of GPF Uptake*