So, there's only a couple non-fruiting plants among my tropicals, and one of them is a drosera (sundew), which helps ensure that flying pests don't get out of control. The other evening I was doing my periodic pH measurements and I got to the drosera (a relatively recent acquisition, never-before measured), and the results were so off the chart that I actually went back and recalibrated my pH meter. Its soil was pH=3,1! Lowest measurement I've ever seen - that's like soda. Droseras certainly tolerate acidic soils, but they generally prefer at least pH=5,5 from what I've read, and too low pH hinders their growth rate.
I was going to just lime it, but then I ran into another tidbit: apparently most droseras are calcifuges. They hate calcium. And they generally prefer nutrient-poor soils in general. Well, that leaves me in a conundrum: how do you raise the soil pH if the plant hates calcium, and most nutrients in general? Is my best bet just transplanting into new medium? Or should I just let it be, since it's seemingly healthy?