I’ve been reading/following the SLAM method. That’s how I got it as blue as it is now. It was pretty green.You're great in that we can work on it all without dumping most the pool first.
I wanted to confirm it was well mixed prior to testing. (15 mins is plenty).
My buddy @Jimrahbe likes to say that having a little algae is like being a little pregnant.
Read up on the SLAM Process. With clear and cool water, it'll be 1000X easier than a June swamp. So you have that going for you, which is nice.
First confirm everything is good and mixed. Then we'll raise TA (to 60 with baking soda) and PH (to 7.2 with borax) and commence slam.
I don’t understand your question about it being mixed up?
What is supposed to be mixed up?