Check the listing for details. Cutting Edge Uncle John's Blend 0-0-2 ~ Potassium along with Iron - Hydroponics. Condition: New. Listed at 40.49 USD. Free Shipping Lower 48!! Uncle John’s Blend™ supplies potassium along with iron in a unique and proprietary formula. Potassium activates enzymes essential for plant growth reproduction and carbohydrate metabolism. Uncle John’s Blend™ is formulated for use in hydroponics, soilless, continuous feed, drain to waste, and for use in soil. Use as a foliar spray to reduce transplanting stress and to correct potassium deficiencies in flowering plants. Uncle John’s Blend™ can be applied at every watering in conjunction with any Cutting Edge Solutions® products, or other commercial hydroponic nutrients. Commercial and small sizes available: 1 Quart, 1 gallon, 2.5 gallon, 6 gallon, 15 gallon, 55 gallon barrel, and 270 gallon tote. *Please expect a 2-week lead time on placing commercial-sized orders. Please see photos for more details and condition. Please ask any questions you may have about this item before you bid. Thanks for coming by! If you plan to buy more than one item please request an invoice for combined shipping. Use the Cart feature in EBay to add items until you are done Shopping. Then on the first page after you've clicked Proceed to checkout, you'll see a Request Total From Seller button in the shopping basket. If you don't do it this way eBay will force you to make immediate payments for each item you buy and you will be charged excess postage.