I received around 90 stems and after having planted them they've all melted in a week and a half's time. The stems are still there, and but most leaves have melted or discolored with holes. I received them over 4 weeks ago, and regrowth hasn't been recognizable. The tank they're in has pressurized CO2, EI dosing, and other plants that have been reacting wonderfully under these conditions. I've had no algae issues besides a little on the glass. Has anyone had issues similar to these?