To further the discussion we had in "chat", here is an interesting article about coralline algae
. It's near the bottom of the page.
As well the two actinic bulbs with the "white" bulb would be the best suggestion to increase the amount of coralline in the tank based on your current equipment. Other than the coralline and other algaes, the LR
does not need any specific light.
is basically just a home for fauna and bacteria.