Swimmers Advantage Algaecide 30 plus is polyquat 30% - polyquat 60% is usually recommended here but you've avoided the stuff that foams or adds copper - Good! Trouble is that polyquat is better at preventing algea than killing it.

You pretty clearly have an algae battle on your hands. The plan for cleaning up an algea bloom is to shock the pool. To shock the pool:

Raise and keep the FC above shock level until for one day after:
The pool is clear
It loses less than 1 ppm of FC from sundown to sunup
There is nearly no CC (one drop or less)
Run the filter 24/7 - cleaning as necessary.
Brush the pool daily.
Test and add chlorine as often as poosible - at least twice a day.

Find the recommended shock level for the pool's measued CYA in Ben's Best Guess Chart.

This can take a while but keep at it - letting the FC slide below shock level is a giant step backward.
Good luck, you can do it!