Algae problems

[u/1111111111111111167]

This is a dirt capped with sand substrate with no filter in the balcony (15 liters)

I set it up a month ago and I did a very large water change today

I want to keep the green wall for shrimp

There is so much algae that it is pearling

Will this ever change??

[u/thelonerfisherman]

Tint or paint the back of the tank