Did you look at the Best Guess Chlorine Chart in my signature above to understand the CYA (stabilizer) and chlorine connection?

Your kit only has the capacity to measure to a chlorine reading of 5ppm which means you can't really tell what your chlorine is when it reads 5ppm. This is one of the main reasons we want people to order the K2006 as it can measure chlorine levels way higher than that.

Assuming that your CYA is still low since it was just recently added, you need to get your chlorine level up to around 10-12 and try and hold it there in order to kill the algae. Since your kit won't read higher than 5, you kind of just have to judge based on the color. Take a look at the first post in the following thread. If you click on the link in that first post, it will give you a color matching to try and decipher what various OTO colors mean in terms of chlorine levels. (Your kit uses an OTO chlorine test.) Aim to keep yours in the very dark yellow/orange level.

http://www.poolforum.com/pf2/showthr...sults-by-color