Kit includes; 5 lbs of Part "A" Masterblend 4-18-38 Fertilizer 2.5 lb of Part "B" Magnesium Sulfate 5 lbs of Part "C" Calnite Step-by-Step instructions, I include mixing instructions for greens like lettuce and also nutrient hogs, like tomatoes. So that you can make sure you are mixing to the right ratio to feed your plants properly. Professional Strength: This is the same high-quality formula trusted by agricultural professionals, now available for home use. It?s perfect for anyone serious about getting the most out of their plants. Cost-Effective: As a concentrated powder, it?s far more economical than liquid competitors, giving you more product for your money. One package goes a long way, making it a smart investment for both hobbyists and commercial growers. Versatile Use: Suitable for all growing mediums?whether you?re growing in soil, hydroponics, or coco coir, this fertilizer provides the essential nutrients your plants need to thrive. Now you can grow great tomatoes by using the Masterblend Fertilizer Kit Same day shipping if ordered by Noon