COMPLETE NUTRIENT AND ADDITIVE SETUP: Our starter kit includes all of the essentials and additives you need to start your growing journey. Pack includes: Grow & Bloom Base A & B, Golden Tree, Flower Stacker, CalMag & Iron, and Plant Enzymes. MAKES 125-150 GALLONS OF SOLUTION: Enjoy between 125 and 150 gallons of premium-quality nutrient solution to provide proper care and food for potting soil for indoor plants and outdoor plants. COMPATIBLE IN ALL GROW MEDIUMS: Perfectly suited for use in all growing mediums. Whether it�s gravel, sand, coco mix, or hydroponics, Humboldts Secret Starter Kit will help your plants grow strong and healthy with minimal effort! MADE WITH THE FINEST INGREDIENTS: All Humboldts Secret products are made with quality ingredients for thriving plants. Our Starter Kit gives you all of the essential nutrients as well as some additional supplements to start your growing journey! MADE IN THE USA: Each one of our Humboldts Secret products is proudly made in the USA using quality ingredients to ensure an optimal indoor plant fertilizer and healthy, thriving plants.