Aquarium already getting cloudy?

a new tank will always go through a cloudy period, not necessarily when you first fill it up but like days after sometimes it will become cloudy, this is the bacteria getting set up, it sorta goes wild for a while then balances itself out, it is not only normal but actually GOOD for an aquarium for this bacteria to be present, once it levels out the water will become clear, it may take up to a month for it to clear fully. after this never take out more then half of the water when cleaning and doing water changes, if you take it all out and replace it all like some people do who dont know what there doing ,it will cause this reaction to occur again. every time i move to a new apartment and have to completely drain my aquariums i have to go through the cloudy stage again. just take 1/3 or at the MOST 1/2 of the water out once a week (you can go a month if you have to since you have a beta, betas do well in dirty water there natural habitat is pretty dirty swampy water) everything about your tank is fine as you described it though ,it sounds like your doing good.