Using activated charcoal for orchid medium

[Bluecrab]

Hello, as a novice flasker I too have done a bunch of reading, talking to the experienced guys etc. and the one thing that seems universal is adding half a banana to the 1L mix....( I've tried Potato, Tomato Juice, Sugar etc, but maybe the trace elements in Banana?) I have had many trial and errors, and making new flasks at 1/2 strength P668, and half a banana is like a miracle for my stagnant protocorms. PS you can buy AC capsules in the vitamin section at Walmart or any health food store. Spring Valley brand has 60 caps (500mg per cap) for $8. Since I buy the full strength P668 I also get extra Agar at the health food store and make my own 1/2 strength....Ok, my 2¢