Hi and Welcome....
Is your Tank cycled?
There are plenty of water clarifiers on the market but in this case I think you might want to identify what is causing the cloudiness. A lot of the members use Seachem Prime as their water conditioner. I just stick with all SeaChem Products to maintain consistency.
60 gallon(Parrots and Convicts) 55 gallon African Cichlids 5 gallon Betta tank 35 Gallon Hex (Bolivian Rams, Oto cats, Bloodfin Tetra and a shoal of Tiger Barbs) 75 Gallon Oscar Condo. 30 gallon GBRs & Danios