I have noticed that the new macro algae that I got about 2 weeks ago has started to die off. I have a fairly old bulb over the refugium that I have been meaning to replace. Could this be the cause of the problem? The cheato and dragons breath are doing ok so far but the Caulerpa algae has dissolved and had to be taken out. This is the same thing that happened before when I was using the algae fix. I thought that was the reason for the macro dying then but it’s still happening and I haven’t used the algae fix in a long time.