I have red slime but it only grow in my refugium i check my phosphate level it reads 0 nitrate 0 nitrite 0 i have chaeto and caulepra with a rapid led light bulb that has 4blue and 3white led. my display tank is beautiful and clear except for some of the rock has green algae on it, when the light is on its neon green off regular green.can anyone tell me what i am doing wrong and how to fix this problem.