Is it a good idea to vacuum the pool and clean the cartridges before starting the SLAM process?

Oct 24, 2018
9
Tx
I didn’t do a good job closing the pool. I had to do it early and in a rush because I was leaving for a trip. As a result, my pool is very green after opening this year, with a thick layer of algae everywhere.

I ordered a test kit that will arrive tomorrow. In the meantime, is it a good idea to vacuum the pool?

Also, should I only test for pH and CYA, or do I need to adjust alkalinity as well?

Thank you.