cloudy tank

[PopzTheBetta]

i have a ten gallon tank with a filter and heater i had just a betta in there but i just put in 3 corys anda snail in there (my betta didnt even flair at them lol he so nice)and then the water got cloudy ove night how can i fix this

[Crowntails]

What are your water perimeters like? This may be why the water i cloudy.

[LaLaLeyla]

Did you cycle the tank?

[PopzTheBetta]

im not sure if its cycled i dont have any test strips but ill buy some i do a 25 pecent water change every week for i think a month so im not sure

[Hail0788]

Do you have your tank in a window?