Ray, I just saw your question. I measure the ferts with a gram scale. I use .625 grams of K-Lite per liter of water. And half (.312 g) of Miracle Gro per liter of water. I try to get 75 ppm for each solution. Each orchid gets approx. 1/3 liter on the pour through watering day once a week. Mid-week (if they are dry enough) I spray the top soil with a 75 ppm fert solution from a spray bottle (this dries out faster than the pour through.)
Note: the directions on the K-Lite bottle say to use .57 grams of fert per liter to get 75 ppm. I don't know if my math is wrong, but I took a pic of my formulas to get 75 ppm per liter.
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