Not sure I agree. My pH for RO runs approx 6.2 (slightly acid). Rainwater here runs lower pH than that (don't have any right now or I would test it.) Solution after adding MSU mix for 125ppm runs approx the same (surprize!)
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Ross
http://orchids-ross.blogspot.com/
I don't do most Dendros or large, "floofy orchids". For me it's minis (like Angraecoides), Masdies, Paphs, and others that crept in somewhere along the line. See my orchid list for complete collection (usually not current.)
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