Cloudy water..

I just yesterday had a random issue of having super cloudy water. I don't know what has caused it. I assume its a bacterial bloom. I've recently started dosing my tank with Red Sea's Reef Energy (coral food). maybe this caused a nutrient spike and is allowing a booming bacteria population?? I tested my levels and all are at 0ppm.



What are you guy's thoughts on this?



Tank is nearly 6 months old. last new fish added was about 3 months ago.