I heard about it on a Hoya forum a few years back. Everyone was saying it was the best thing since baked bread for getting their hoyas to bloom.
Now that you bring up the acid comment. I remember someone saying you could make your own by mixing tree stump killer with a large ratio (I do not remember the ratio) with water. I do not know where he got the info ingredients or if he was correct.
Because I mixed it in all my water for plants and the Orchid died I did not think it was because of the VF because my past experience was killing Orchids, but it might have been because of the VF. So I will not use it on the Orchids but it has worked good on my other plants.
