Stan, I don't know if water is the issue, but I water mine every day, and the plant loves it! At this time of year, as long as the weather supports it, I think they'll take all the water you want to give it. Conversely, the very wet Dec we had at the end of last year, with cool days, was no good at all. My big one had leaves all the way to the bottom of the stem, after being water-logged for a week, the lower leaves developed brown spots, and eventually turned completely brown and dried up. With no end in sight to the rain at the time, and no room to move it to shelter, I made a plastic skirt around the stem covering the pot, and the deterioration ceased. The likely fungal condition never made it to the upper rosette, and with plenty of new leaves now as well, the upper rosette looks awesome, and the upside of the experience is now the stem is pushing out lots of pups.
The other thing I want to mention is you have to expect the variegated plants to grow slower. The more variegation, the less chlorophyll, the less photosynthesis, the slower it grows. Yours is a great looking plant, lots of variegation, but will be a relatively slow grower as a result. But, like the saying "fine wine takes time", your fine plant will take time, but will be more and more of a stunner the bigger it gets.
So, more water might help yours out, but it's going to be relatively slow growing compared to a regular arborescens anyway.
Here's some of the pups on mine, one is very unusual; not just because it's all yellow, but because the leaves are very short and triangular compared to the other pups. I have no idea if it will keep that form, but it'll be interesting to watch it grow. Unless I see some green on it as it grows, I'll probably have to leave it attached to Mom.
- 2015 08 22 Aloe arborescens Var pups a X750.jpg (137.39 KiB) Viewed 7722 times
A final comment on the current culture mine gets...when I got it, I kept it in a relatively full sun location, but I wasn't altogether thrilled with it's appearance. At the beginning of the year, it got moved to where it's got full sun until about noon, and filtered light through trees afterwards as the sun moves West. It's looking like all I could hope for now, really nice.