All that I can tell you is that several members of the Tampa Orchid Club are now using a product called Dyna-Gro by Pro-Tekt. It is a liquid called the silicon solution and claims to improve heat and drought tolerance, increase resestance to environmental stress and enhance growth for stronger hardier plants. Some claim it is better than SuperThrive but who knows? It may be indeed better but better than nothing isn't much. The label says 0-0-3 so it just may be soluble potash. Very expensive soluble potash. I buy a product called Kmag (0-0-23) in 50 lb bags so if I add a tiny amount to my misting routine I could have the potash and the magnesium covered all in one shot.
Jim
