You seem to have a good mix of debris, diatoms and cladophora. Blow away the debris into the filter or clean it as much as possible.
The brown algae will go away once the tank is a little more established and when nutrient levels are higher. Harder water seems to favour them.
The bad news, cladophora will not go away on its own. Spot dosing with excel or H2O2 will prevent it from spreading, but you will have to be very rigorous.
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