had them growing in multi compost mix (cheap) under reptile basking bulbs 300w 5 plants. they seemed fine. noticed strange mark on one of the plants after 3 weeks. Someone said change the soil. changed to john innes no 3 potted them in to 10l pots. next day they started shriveling and shrinking like they had been burnt as in pics. got new bulbs and cfl 200w bule for veg and 200w red for flower set them both up together. changed the soil again as soil was too strong. got plagon royal mix plants are getting worse. don't know what to suggest now what could be wrong. worried if starting again will they do the same?