I have both the green and a red speckled bubble algae. I have been manually removing frags and small rocks and picking them off, then dousing in kalk paste. But I just came back after almost 4 weeks and it's spread to places I can't get to easily. What are your suggestions? Emerald crab? Sailfin tang? I have a 90g, radions, gfo, gac, light bio load.