Hi, I'm Alex at the Grow Show. We carry a wide variety, starting with products like House and Garden, General Hydroponics, Ionic, Botanicare, Maxicrop, BioBizz, Earth Juice. We also carry bat guano, earthworm castings, and the completely organic General Hydroponics line, General Organics. TechnaFlora's line, Humbolt's line, Fox Farm, Dutch Master, Trinity, Dark Energy, Hygrozyme, moving into Advanced Nutrients. We are a one stop shop for hydroponic supplies. This is all available at our Ann Arbor Store location at 4095 Stone School Rd, Ann Arbor Michigan. Or on the web TheGrowShow.org.