I actually had about 75% of the sand and most of the wood and 8 gallons of the water in an 8 gallon tank for about 2 months before.
I moved everything over to the 13 gallon 3 weeks ago. Should I have cycled the tank again? The fish and snails do not seem to be bothered by the water quality.
I assume you moved the filter over as well? Most of the beneficial nitrifying bacteria reside in the filter media and not the substrate/water column.
As for the cloudiness, it may also be an algae breakout. Take a small amount of water and put it into a clear (or white paper) cup. If there is a tint of green, then it may be an algal bloom instead of a bacterial bloom.