water droplets....i had a few aphids, but no mealys....thank god....mom kept a routine of seven spray every two weeks while i was gone and i used a systemic when i returned....no mealies or scale in MY gh, lol....i detest buggies...i am due my phyton 27 spray and resume feedings.....all in all, the gh runs itself, with hand watering....it is kept scrupulously clean....