It sometimes takes time. What did you use to clean the tank? Do you have fish in the tank? Are the water parameters ok? Give the tank a couple days to clear up.
if you dont want any cloudiness anymore then you can grab crystal clear by AP (aquarium products) sold at petco, petsmart etc. worked wonders for my 20 gallon and 55 gallon.
I just had the same thing happen on my 220g. I decided to give one of my filters a good cleaning and all the sudden my water was cloudy. Just give it some time and keep an eye out for any ammonia spikes.