Those having hydrometer probles. I find the luttle black combo ones from walmart work within 1-2%. I have two one is right on other is like 1-2% low.
To test hydrometers place them in see through tupperware dish. take a small lid and fill with salt then add water to salt to make it wet like damp sand. Put the lid in container with hydrometer and seal container. I give mine 12-15 hours to settle. They should read 75%.
To test hydrometers place them in see through tupperware dish. take a small lid and fill with salt then add water to salt to make it wet like damp sand. Put the lid in container with hydrometer and seal container. I give mine 12-15 hours to settle. They should read 75%.