Clouds be Gone...
I would first worry about what has made the clouds. This is slightly concerning. Are you testing the NH3, NO2-, NO3- ??
Second, water changes to dilute WTF is going on.
Third, I just used Seachem's "Clarity" to clear up a new tank that had lots of substrate dust, heavy bacteriological additions, and dead plant matter (and associated bacterial bloom). The tank took two applications, but cleared up pretty well. The product, Clarity, is a flocculation agent which makes things stick together, which is good, as I rinsed the filter and all is well.
It seems like in your case there is maybe a bacterial bloom thing going on in your tank. But here is the thing, these blooms can be good indicators of a problem that you need to diagnose. If you have been playing around with something, that might be the cause.
Maybe look at the filters and see if they are clear and clean.
Maybe you should considering adding to your tank with some bacterial additives. Unlike some people, I am somewhat confident in the "biofilter" bacterial additives, like "Stability", "Cycle", and so on, and I pour lots of it through the filters to keep the bugs running. They don't act quickly, but there is a noticeable result from using them.