Just like Susanne, I haven't used Protecht, but I love K-L-N. The grower I get most of my good orchids from has always told me to use the K-L-N only with bloom fertilizer. That way, it builds up it's roots during, and a little while after, the bloom cycle. Then when the new growth starts, raise the nitrogen (give it growth fertilizer), and it will take off. Because the high phosphate and potassium content in the bloom food helps with new root growth. This way the plant dedicates it's cycles to certain things, instead of trying to do everything at once. I have followed his instructions religiously, and I've had nothing but wonderful results. Plus, I've never seen anything but huge, beautiful flowers come out of his greenhouse. If you want to see my bloom/root recipe, check out my reply in the thread entitled: "promoting new roots on a vanda" in the "Vanda alliance" forum.
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