Join Date: Jan 2006
Location: Cherry Hill, NJ
Grapevine is fine to use in the tank, its actually a pretty good wood long term. It is extremely sappy though and unless drained and dried for a long while it will cloud your water like that as all the sugars leach out into the water where bacteria eats them up and blooms.
Should clear up relatively soon, though watch out for green water. It usually follows a large white bacterial bloom.