A common factor leading to cloudy water is overfeeding.
No matter what the
cause it would be wise to stop the feeding for at least 4 days and feed half as much from then on. Don't worry, everything will be fine, and actually improved because of the fasting.
I agree with Arthur that
to help further we need the answers to those questions.
Sometimes it's an algae bloom, which is even more likely if the tank was
started with the Four Live Components. As Arthur said, this is also a
good thing because it eats up all the new tank pollution. Stopping the
feeding will help but if it gets much greener, there are at least three ways to
handle it (a skimmer is not one of them

).