Impossible Aquariums on Instagram: "Laterite, volcanic ash based substrate, lava rock pebbles, coarse sand "cap" but this time I didnt add a leaf crossing all layers. Next jar will be made with leaf litter. Also, i will not inoculate anything (no bacteria, no microorganisms, no fungi). I will rely on plants and animals I add like scuds, crypts ou anubias and moss, to bring what I need. Will it work? YES! I believe it will. #plantedtank #shrimptank #fishtank"