Well, it turns out that I definitely did overwater my Royal Flush succulent. When I first got it, there was a single leaf at the bottom of the stem (not that I could see the stem, given how fat all the other leaves were), which eventually had what little water it contained sucked out of it, before it fell off. When I first got it, I had no concept of what "dry soil" was. As a result, I watered it at least once a week. I gather this is what caused it to split the newest leaves so quickly, as the base of both leaves would have swelled with more water, forcing the two sides to split apart. But, just as you're not supposed to use any nitrogen-based fertilizer, or it'll bloat and rot, overwatering it does the same thing. Just, without the obvious bloat. Eventually, I figured out that weighing the whole thing is the most reliable method of seeing how much water is left in the soil. It got down to 73 grams as the lightest it ever got before I watered it again, and I know this because I logged