I have seen pools look green with very high TA -- though I've never been able to determine if that was cause or coincidence. I've also seen pools turn green with iron.

1. Lower your pH to near 7.0 => http://pool9.net/ma/

2. Watch the Taylor videos, so you can be sure you are doing the tests correctly:
http://pool9.net/tk-guide/
http://pool9.net/tk-interfere/
3. Test and report your CH (calcium) level.

4. Complete the pool info form:
http://pool9.net/pf-pool-form/