Yes stop using your auto CL and tabs , they raise your CYA .

Buy Ultra Bleach , I found Axis brand at Save a Lot stores for 1.18 3/4 gal , and use that . My CYA is 30ish and no problems with algae .

If you want to see all my "old" problems like yours , just do a seach using my name here on this BB board .

Tabs or Pucks raise you CYA and give you countless headaches with "the green stuff" .