I mixed coco fiber + sand (about 4 to 1 ratio I think, but I just estimate based on the look and drainage of the soil LOL) with a little organic potting soil for my pothos. It's potted in my GTP enclosure and has been growing well- pothos are very hardy!
She's simply asking what kind of soil people on the forum might use, and I don't think that's very complex to reply. Many thread questions you can say "just google it" but then that defeats the purpose of this forum.