Hard to tell for sure?? What I would do Jamie is ease on the side of caution. Do 2 hours and then go see where your temps are down there. Then if still in a good range try 4 and then check again. If 4 is close stay there, checking it every couple of days if you can to see how it's doing. If it starts to get to warm back, back off to 2 hours.
Good Luck,
Last edited by RC51; 05/01/12 08:33 AM.