Does anyone have any ideas why my SPS would die from the bottom up? It still polups out on the living parts but the bottom near the plug is dying going up. I thought this was just because of being put on the plug but it continues to go up the frag. There are a few frags that this is happening on. Do they need more light and that is why they would do this? I can run a full set of tests tonight on the tank but I just wanted a direction to go in first.