I tend to listen and follow the guy NewYorkSteelo on youtube. He uses Leng Sy Miracle Mud and swears by it. He uses caulerpa and has his refugium light on 24/7. I'm really considering on buying and if i do... ill let you know!
I use to keep my fuge light on 24/7 but noticed after a month the algae closest to the light seem to die off and turn brown. Also all of my coraline algae on my rocks in the fuge died off. I believe it was from to much light.
I have it in my system for about 6 months and my corals are definitely showing better coloration and polyp extension but I am still not convinced that it is the mud.... I say that because in the leng youtube video he show that the mud prevented algae from growing, but in my system I got to clean the glass almost daily
I used mineral mud by carib sea on my sump/fuge its a little different but that thing works great if u wanna swing by It's still running in my system and I will continue to use it till it fails me