Some articles on dosing vodka/sugar
http://www.reefkeeping.com/issues/2004-10/eb/index.php
Neilan M. Kuntz, David I. Kline, Stuart A. Sandin, Forest Rohwer. 2005. Pathologies and mortality rates caused by organic carbon and nutrient stressors in three Caribbean coral species. MEPS 294:173-80
Kline, D.I., Kuntz, N.M., Breitbart, M., Knowlton, N., and Rohwer, F. Role of elevated organic carbon levels and microbial activity in coral mortality. Marine Ecology Progress Series 314: 119-125, 2006
Ritchie KB, Smith GW (1995) Preferential carbon utilization by surface bacterial communities from water mass, normal, and white-band diseased Acropora cervicornis. Mol Mar Biol Biotech 4:345–354