Important question about fertilizer storage

if you want to store it in a fridge to imrove the durability never go below 3 degrees celsius because of the risk that it can get half frozen the content and it could split and separate the elements inside degrading them. take in consideration that the colder the element is the greater the density is going to be, so maybe some of the elements get hard stuck at the bottom of the bottle so you will need to agitate it more time than usual to get all well mixed if you want you can post images here to know what the issue could be.