Help kill this algae!!

[joegillis205]

Good day everyone, wondering what way I should go about getting rid of this algae. Tank has been running for just over a year. Crashed once and killed everything except zoas. Current parameters are
Alk-8.9
Mag-1500
Cal-500
Ammonia-0 (sailfert)
Po 0
Temp 78
One gallon water changes every week
30 gallon aio aquatop with radion g5

 

[blaxsun]

Vibrant... just kidding! What are your nitrates? Your phosphates being at zero is probably a contributing factor.

 

[Ultra Aquatics]

Hard to tell what your dealing with in this picture. If you can get an up close picture of one of the rocks with algae in white light, that would be ideal.