I have a D. adelae, D. capensis, D. aliciae, and D. capillaris "Giant Form" on the way. As far as soil mixture goes.....do they all like 50/50 peat/sand mix? I mixed one of those up for my VFT with silica sand/peat and planted another VFT in pure peat, and it seems like the one in pure peat is a little happier. They have only been in there about two weeks, so maybe it will start looking better soon. I did wash the peat and the sand before planting them too, and also microwaved them to make sure there was no living things in there. I only rinsed it once or twice though, maybe the sand needed more rinsing.
But I was wondering if they would be happy in pure peat too, or if sand is a good thing to mix in with them. I might add some LFS into the mix as well. Thanks!