Who has used Kool Bloom and what are your experiences with it?

Hello fellow farmers!
I have a question for the masses. Who has used GH Kool Bloom 2-45-28, and what do you think of the product? The reason I'm asking is I'm using GH Flora Nova Veg and Bloom. I'm in the 4th week of bloom and I was considering using it to enhance what I have.
I'm planning on posting an update on my plants progress later on after the HPS shuts off and I can snap some pics in regular light.

You should cut nutes by 1/3 when you add it, or it can burn your plants. It seems to make plants finish a little more completely, hairs will start turning red quickly, I wouldn't add it until 3 weeks before harvest.