What is the better/cheaper idea, turning my media reactor into a refugium or making one from scratch?

[Annacatherine1331]

I have a 90 gallon tank with the worlds laziest sailfin tang who can’t be bothered to actually do his job and eat algae. I been running activated charcoal in the large media reactor from BRS. I was wondering if I could just get a cheap LED light strip to wrap around the reactor. I would put it behind something to block the light from going into the refugium. How cheap of a led can I get away with here? Please let me know your recommendations are for ultra cheap refugium leds.

Would it be better to just diy a refugium from scratch so I can keep running charcoal? Should I buy a premade refugium?