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Hi I want to simulate a sandstorm that come in and leaves after an hour. The effect I've got so far is this _ppGrain = ppEffectCreate ["colorCorrections", 2005]; "colorCorrections" ppEffectEnable true; "colorCorrections" ppEffectAdjust [1, 0.6, -0.001, [1,0.675,0.188,0.3], [1,0.675,0.188,0.4], [1,0.675,0.188,0.3]]; "colorCorrections" ppEffectCommit 3; I can make the effect fade in, but how would I fade it our later? Will also prob have to sync it to the fog's time.