Anellydevan504 said:
All I ask if I can change my water
I understand that and I'm trying to find out whether your cloudy water is a bacterial bloom or not.
With most new tanks and new fish keepers comes a very steep learning curve.
If you have fish in your tank within 2-4weeks then the chances are that your tank is not cycled and as such you may have high levels of Ammonia and/or Nitrite which are very poisonous to fish.
These levels can spike causing fish death if not handled properly.
Without basic information of your tank it's hard to help you for sure.
With new tanks that have fish almost straight away comes a lot of hard work.
Water changes on new tanks should generally be performed if Ammonia or Nitrite rise above 0.25ppm. If you don't have a way of testing for these then I would suggest performing 50% water changes every other day until you can get yourself API FRESHWATER MASTER TEST KIT.
This way it is as least stressful to your fish as it can be.
A fully cycled tank tests zero ammonia zero nitrite and 20ppm or less nitrates.
In short to your question yes water changes will help to reduce the cloudy water.
Jon