Will this light be good for macro algae?

[weldrick208658]

https://a.co/d/f9LqZySIt’s a 20 dollar Amazon light that says full spectrum and I was wondering will it be able to grow macro algae, just beginner macro alage nothing to hard

 

[Rocks reef]

Being 11W, it is a pretty weak light. Depending on how deep you have your macro, it should be fine. Only one way to tell. Grab the light and try it. You won't be out much if it doesn't work, or you could add a second one.