spotting like that, usually indicates over-watering, but your watering description sounds OK ... another cause, is lack of calcium, try adding Cal-Mag+, anywhere from 5ml-10ml per gallon ... if I'm not mistaken, 'African Violet' soil is highly acidic, another reason for more calcium ... avoid African Violet products in the future, and transplant into better soil ASAP ... any good potting soil, (the less peat, the better, also acidic) ... add perlite to a 30% ratio ... good luck :smokin: