Aquarium room curtains/tint

[Bakedpwn]

Wondering if anyone has ever found any "blackout" curtain brands that work. there are so many on amazon with mixed reviews idk. i have a room that needs 3 sides blacked out. i saw the tint but it says it wont be good on certain types of windows so im not sure about tint.
any suggestions?

 

[swayd]

I use the Walmart ones and they work fine.