Time flies, final update on hydroponics results

Time flies. It has been closed to a year since I started to grow some cryptocorynes with just water and sponge media. Of the 16 species tested, only C. ferruginea, C. alba and C. ideii (collected from west Kalimantan which i suspected could had been C. ferruginea too) eventually survived the harsh environment. There shall be no further updates on this in the future as only 2 or 3 species are left.