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  • naoki's Avatar
    08-01-2017, 08:50 AM
    naoki replied to a thread Fertilizing a mounted orchid in Orchids
    ppm is weight based, and not the number of molecules. So you put 100mg of fertilizer in 1l of water, it is approximately 100ppm TDS. Strictly, you...
    14 replies | 491 view(s)
  • naoki's Avatar
    07-30-2017, 04:34 PM
    naoki replied to a thread Fertilizing a mounted orchid in Orchids
    Oh, so you measured the weight of 1/4 tsp of fertilizer to get 97.7ppm? Yes, you probably don't have to worry about the 3 missing essential...
    14 replies | 491 view(s)
  • naoki's Avatar
    07-28-2017, 10:09 AM
    naoki replied to a thread Fertilizing a mounted orchid in Orchids
    I'm guessing 97.7ppm is approximate TDS (from a TDS meter), which is different from nitrogen concentration. TDS is an important factor, too, but I...
    14 replies | 491 view(s)
  • naoki's Avatar
    07-27-2017, 02:37 PM
    naoki replied to a thread Fertilizing a mounted orchid in Orchids
    Some people talk about fertilizer "strength", but I'm not sure how much you are giving. Most of the time we talk the dilution of fertilizer in terms...
    14 replies | 491 view(s)
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