Most importantly, never go by the number of days suggested by the instructions in the kit. Always use your hydrometer to get within the required range for each step.
A client recently brought in a weak wine which was fermented according to days rather than actual Specific Gravity. Calgary’s dramatic barometric pressure shifts and high altitude mean that if you do not monitor your Specific Gravity then you may not allow for complete fermentation. If you stabilize at 14 days (according to the directions) without checking the Specific Gravity, you may prematurely kill the yeast. Always check your hydrometer for a correct Specific Gravity reading. You will be rewarded with superior results.