having possible mustard algae problem 3 weeks now

[bluebayou]

the Taylor kit came today and my wife tested it. it showed CYA at 75ppm. I did not have her to test the chlorine with the Taylor. The test strips showed 3 ppm, however. The pictures that she forwarded me show the pool to have green algae covering the floor surfaces and a greenish tint to the water.

please advise what to do and I will relay the instructions. we have access to bleach and to cal hypo powder locally.
Sorry about the delay, but I left for an out of town two week business trip. that was why I was stressed trying to solve it quickly last week. I have a little additional money coincidentally if I need to replace water or purchase a lot of chlorine.
thanks