My Attitude package was diverted to a Warrendale, PA facility which was strange, seeing as how I've done many before and there were never two USPS stops prior to my local big city USPS hub (which delivered to my local post office the following day). Sure enough, T-shirt and no seeds with the...
I haven't used coco yet but I've heard that it throws the Ph of soilless mixes off. Have you measured the Ph? I've waterlogged a few plants and they looked like that before. Too wet of soil and the plant didn't take up nutes.