I have a few questions about my Gold Tooth Aloe. I bought it at Lowe's back in June and put it on my deck throughout the summer, where it got partial sun. The deck temperature gets hot during warm days.
Since the weather has been getting cool here in Maryland, I've moved it in my house with a 60 watt grow light. When it was outside it was a dark green. After moving it inside, it seems to be really growing well, but the color looks like like it's getting lighter, as with new growth on the plant.
It's in an 8″ terra cotta pot. I water it every 10 to 14 days with 8 oz. of water. Is 8 oz. too much every 2 weeks? Is the change in color normal? Should I get a warmer grow light?
When the Aloe nobilis ‘Gold Tooth Aloe' is happily stressed, it will be a dark green as you mentioned and may also “blush” a little with a bit of orange color, in addition to the green.
Indoors, that deep green color is going to be much more difficult to maintain. Even with the grow light, the green will begin to lighten and you'll notice a much lighter green in the center where the new growth is. This is all normal.
The lightening doesn’t mean your Aloe is unhealthy, but it will definitely benefit from more light. You can try using a brighter grow light, or place the light closer to the plant.
You sound very diligent in your watering, which is great! Since it is winter and the plant is indoors, I'd cut back on your watering frequency to every 3 weeks or so. While your succulent will continue to grow with limited water, it will grow more slowly. This will help prevent some of the stretching that is starting to occur due to decreased light.