Quote Originally Posted by brent.roberts
If you can find another pool store to do a test ... do it.

Your PH is higher than it should be at a time when you're trying to kill an algae bloom. You want to shoot for the low end of the range, like about 7.2
Actually, when trying to kill algae a pH of around 7.8 will favor the formation of monochoramine which is extremely effective at killing algae but is very short lived. This is exactly how the ammonia based 'chlorine enhancer' type of algae killers work! If you do this be sure an keep the chlorine levels as constant as you can for best results.
This makes the chlorine more effective as an oxidant and can almost double the effectiveness of PH near the 8 level.

Sure hope you get your kit from Ben real soon. It would be a big help now.

Sounds sorta ... kinda like you've got the chlorine level in the right ballpark. Keep the brush active. The algae the grows ON the pool is the hardest to kill off. The brush is critial.
Hope this helps.