Ok, so my water is steadily turning green over the last 3 days. Chlorine is at 5.0 (or higher) and ph is low at 6.8 or lower. What should be my next steps? Should I just assume the green is Algae and SLAM or? 10,000 gallon 22' pool Intex with original 2,500gph pump/filter. Should I replace the filter its about 2 months old?