The A. californica specimen from the previous post turned gray wherever it remained too wet. The parts of it that didn't were still green, and according to my calculations the light, substrate, and pH levels are all within a suitable range, so I'm more or less certain the water's indeed the problem. By the way, have I mentioned it was a calcareous-substrate plant? Yeah, the research papers never mention this but in the wild I found it growing with Bryum argenteum + lanatum, which are known calcicolous taxa, so we can deduce it's one too.
Anyways, I've decided that I'll let my wort go dormant for now because of the heat wave (I suspect it cannot gain any calories from photosynthesis above 79 Fahrenheit or so). Let's hope that once the weather cools down it'll start growing sprouts when I start watering.
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