Welcome to TFP!!
My first suggestion is to stay away from any pool store. Their only response it to sell you some magic potion that will drain your wallet and not help your pool a lot.
I will tell you, it didn't turn green overnight and it will take time to clear. But, we can teach you how to get it sparkling and keep it that was for a lot less money than the pool store.
Not much credence is given to pool store testing around here. While you would think that a "professional" would be the best, unfortunately in most cases it is quite the opposite. Between employees who blindly trust the word of chemical sales representatives and high school kids working in the pool store for the summer you end up with poor results from their testing. But, what can you do?? We base our pool care system on
accurate testing and only adding what the pool needs, when it needs it. To do that you need your own accurate test kit. Order a
TF100 and at least include the
XL option. That will give you what you need while you are clearing the pool, and probably enough reagents for a couple of years normal use.
Is the pump running? If so, slowly add 1/2 bottle concentrated bleach in the morning in front of a return and again the other 1/2 bottle in the afternoon/evening. You want to use your net to keep getting the trash out of the pool as much as possible. The more you get out by hand now the easier it will be to clear your pool.
While you wait for it to get delivered, you have a homework assignment. Start with
Turning Your Green Swamp Back into a Sparkling Oasis