ghe micro

Hi, this is my first time growing, so Ive been looking to find out when I should feed my seedlings in pre-buffered coco (im using canna coco professional plus).. Some people say to wait until yellowing of the cotyledons and others say to feed straight away with low strength.. Which is...

I have three bottles of the classic GHE Flora Trio, which are now about 3 years old. GHE on their site says that the shelf life of GHE Flora is infinite, as long as they're stored right. (Which I am sure I do. I store them at room temp, in a dark place) I notice a rattling when I shake the...