do you know what your
nitrate phosphate levels were before you upgraded your lights? you could test them now but I would bet they would be low.
Algae grows by using
No3/Po4 (
nitrate/phosphate) in a direct correlation with light. This algae was more than likely all ready present on your
live rock but now it can use the all ready present
No3/Po4 and your new light to grow faster.
What do you have for live stock. This is an important factor in providing a solution to your problem.
