Which is the idea behind the use from time to time of an organic fertilyser?
My 2 cents (again...)
Like Fiber I love to alternate synthetic fertilizers with organic ones. What is the idea? Well... I strongly believe we still don't know what is the best fertilizer for many orchids. Most of us are growing many different species/hybrids with different requirements too... Growing conditions are very different from an area to another... and our plants often dislike high salt contents... Since inorganic fertilizer has minerals that are highly soluble, I think it can be stressfull for some orchids that are very salt sensitive. That's why I love to alternate K-lite and MSU with stuff like Daniel's, Agrogreen, fish emulsion, etc.