make sure the cut is fresh and it should be straight across, not angled or V cut...
DO NOT add anything to the water... no aspirin, no chemicals, no nothing...
make sure you have the proper size stand... 1 qt for each 1" base thickness...
just keep water covering the cut... it will draw water as needed... the freshness of the cut is important, as if it gets dry, sap will seal off the intake of the water...
good luck...