African violets need bright indirect light, moist soil, high humidity and even temperatures for good blooming. Place the violets by a east or west window, or under grow lights. The plants need about 8 hours of darkness to set flowers, so use a timer to turn the lights off at the end of the day. Keep the soil moist, but not wet. Check the pots every day. Use un-softened, low salt and low chlorine room-temperature water. Fertilize with liquid African violet food, but remember that too much fertilizer will promote leaf growth as the expense of flowers. Removing spent flowers will encourage new buds. Keep the plants warm- about 72° daytime and 62° nighttime- and protect them from cold drafts from windows or air conditioners.