algae and too low ph

I have the hth 6 way test kit when I test the CYA it reads 30 but can still see the black dot at the bottom of the test tube. Which makes me feel its too low. So I should add more bleach and at what rate? Another gallon and keep it there until the algae turns gray? Right now when I teat chlorine its dark yellow.

This link my help. It shows you how to interpret off the scale OTO results:> http://pool9.net/oto-chart/

Also, this chart shows you how high chlorine levels need to be kept based on the CYA reading:> http://pool9.net/cl-cya/

For now, aim for keeping your chlorine between 12-15ppm. In your pool, each cup of 8.25% bleach will add about 1ppm and each quart will add about 4.5ppm. Use those as a reference to help you figure out doses of bleach to add when you test.

These three images, snagged from Taylor's website illustrate correct CYA test interpretation:

https://www.taylortechnologies.com/m...s/image001.jpg

https://www.taylortechnologies.com/m...s/image002.jpg

https://www.taylortechnologies.com/m...s/image003.jpg

Take your CYA reading AFTER you reach the end point.

Just an update. Pool is clearing up still keeping the chlorine high and pH is staying balanced. I did find 99% dichlor granules at GREAT ESCAPES POOLS AND SPAS. Everywhere I asked wasn't sure what I was talking about. How often do I add this and is it in addtion to the bleach I have been adding 2 cups daily until all the algae is gone to keep the chlorine levels up.

Now that you have dichlor, switch over to using it. Only use the bleach to 'shock' if the chlorine gets low, or after a party, etc.