Not so fast. If your calcium is that high then your alk may be low. If it is this too can contribute to your hair algea. Maintaining the alk at proper levels can help curb those algea problems.
New lighting can also cause some new algea growth. Did you keep the same lighting schedule?
I would cut the lighting by a couple of hours, this will help.
I would also have the PO4 checked, and if needed use a phosphate remover.
I would start a fresh batch of carbon.
Maybe even a couple of water changes over the next couple of weeks
Thomas