Just want to get some opinions on refugium lighting for macroalgae. I currently have a 20-25 gallon sump with fuge. I am using a 15w cfl with a kevlin temp of 6500K. I have chaetomorpha algae and red gracilaria. I just recently got the red gacilaria and donk know what light it prefers but i like the look of the algae. I havent had much luck with my chaeto growing. I did recently get a new bulb and added a small pump for more water movement to the fuge. Could be nutrients, could be light. Im not sure. Heres my fuge.
Older pic (full tank)
Older pic (full tank)