what does everyone use for planting medium for seedlings? I have learned the hard way that peat isn't exactly the best choice, as what I used invited algae in and ruined more seed and gemmae then I want to remember. So when s. obsessed sent me sar seed, I tried both on peat and sand, and one on lfs. the lfs certainly took faster and is much neater as I have algae on both my s. alata, and s. leucos. so, what do you use and why?