There are companies that set up tanks for trade shows and do what is called "wet skimming" its when you turn up the skimmer to produce output much faster than normal. It helps to clear cloudy water very fast (to the tune of a few hours vs a day of letting it settle) Keep an eye to make sure it does not overflow.
This may or may not help you, it is a widely used strategy from what I understand though. Please look into this further as it may not apply to your situation that you are dealing with. Firstly I would not generally describe cloudy as yellow like you have. I guess I'm kind of assuming you have a new tank.
Please provide so additional details so the experts can weigh in.
Age of tank, parameters, anything environmental contributors and what you have changed recently would help them diagnose.