Hi- I'm new to culturing algae and since I've started doing it myself, I tend to notice it everywhere I see it... ponds, ditches, etc.

Over the winter, my saltwater pool has turned brown.

I understand that the salt concentration in a swimming pool is no where near that of sea water, but is this a saltwater Isochloropsis? I guess the questions are how do I ID it and is it worth trying to cultivate? ...since it turns out that I'm already really good at cultivating it hahaha
Thanks