Can anyone help me understand where things went wrong for me?

I've been maintaining the chlorine at about 3ppm with my SWG and things were going great. I had the solar cover on the pool the last three weeks and maybe didn't brush the sides as well as I should. Took the cover off last weekend and found the water is a bluish-green, so it isn't too bad YET. I added 3 gallons of bleach and brushed it well today. Lots of green came off.

Here are my latest results:
FC 7, CC 0, TC 7
pH 7.5
Alk 90
Cal 190
Cya 40
Temp 80 F
Salt 3000 ppm per Autopilot recs