The trick is to use dirt and then a fine substrate over top of it. The Crypts growth is amazing and it isn't the easiest plant to grow. Thanks for checking out my Growth of plants in a fine substrate over dirt in the planted tank videos. If you like what you see or hear rate this video or add a comment. Ask me questions. For more video, Live chat and custom user profiles to show off your planted tanks planted, reef or other fishtanks, check out www.fishtanktv.com