You have good aeration from the water spilling back into the aquarium from the filter , good flow and the fish look lively and not stressed . The plants look nice and I think you have a good setup . If this cloudiness persists then do daily 1/3 water changes until it clears up . I see no reason for this to be happening . One thing I do is to smell my water in the aquarium . That probably sounds weird but you will eventually learn what smells good and what doesn’t . Bad water has a “funny” smell that good clean water doesn’t and I don’t mean the water from the tap but what’s been in the aquarium for awhile .