I have just got back from vacation. (Everybody's tips on keeping them alive during my absence work very well, Thanks)
I have noticed on my common and on my green dragon, that a few leaves have turned black. I keep them in a widowsill, and it receives sun between 12:30 to about 8pm everyday, keep them watered constatnly. I have to put up a screen, which does allow airflow (like a screen door), and have a fan on it so it keeps the temps around 90-94 at the most. The sun seems to reflect off of the screen and really heat up this area (the screen is for cat repelent!!!).
I was wondering if the sun coming thru the glass magnifies the heat and/or damaging to the plants? I just moved them back from the window a bit to see what happens. Was also wondering if it needs this direct sunlight, or just light in general (ie, moving it to another window where it isn't blasted by the sun at the hottest part of the day)