Hanna,

You are testing or typing inaccurately.

Recheck results for Alk.

Your CYA should not have moved hardly at all unless you've added CYA...recheck your results.

from an earlier post:
6. Once it gets down to 5-6, you must keep it between 5 -10ppm all the time and your algae issues will be over.
Given your Cl of 1.0 you are asking for the algae to return.