I took a split and resplit it. Tested with a moisture meter.(new but I think its junk (now after this)) got an 18% reading put split in fire and after a few minutes maybe 15-20 minutes I noticed some white bubbly stuff on the end of one of the splits. It looks like the foamy head on a beer ? not much just a few spots less than the size of a dime. Is this water ? or what ? Is my wood not seasoned seems to be burning well and some good heat.