Need suggestions; 125 reef that is being overtaken with green,clumpy, 1/2"to 1:+ length green hair? algae. Phosphate is below 1. Water temp 80-82. Been doing water changes always using ro/di/filtered water. SG 1.124. 2 cinnamon clowns, 1 coral beauty, 1 purple tang, 1 orange cardinal, 1...