I've been reading up on colloidal silver and how to make feminized seeds so im giving it a try. I've been spraying my big bud auto with the silver spray I bought for the last month and a half and there are many pollen sacks forming so so far so good. I have a blueberry auto in the tent with it along with another big bud auto then just a plant from bag seed too. I'm not sure if the big bud auto is too late for seeds to develop but hoping atleast one of them will work!! Wish me luck and any advice/ tips are very welcomed! I'll be posting pics in a little.