I have a full spectrum currant led. It is a 36watt. Can I have sps with this light if I put the corals near the surface? Are these lights just not powerful enough?
36 watts doesn't seem like much how big is the fixture?
I have three rr lights below and my SPS grows well but to answer your question no I don't think that light will work for SPS but I don't know much about it.
A reef radiance fixture 165 fixture would grow SPS just fine in your tank placed center 12 to 14" above tank 40% white channel And 60% blue channel.
Kessil lights are nice too.
I am dyslexic with math, I don't understand how to figure out the lighting logistics. I have a pink birds nest for a try out sps. It is doing great place high in the tank. It is glowing neon green below the pink tentacles. I bought a plating red monti drag since the birds nest in sustaining. I glued it to a midlevel rock in full light. I also supplement coral food. If it starts looking crappy I'm moving it higher.