Humidity

[CattyRobb]

Your setup is so awesome Geoff. I get by with one normal oscillating fan. My humidity is good in our little sunroom in summer. Usually it jumps around between 60 and 70%. It’s been much drier most of the time since it got cold here.
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[Keysguy]

To me it's all about finding that balance between temp, humidity and air flow.

[CattyRobb]

Yeah that’s true Leigh. My watering is constantly changing to help account for all of that. This is my first year growing with this setup so I’m still trying to dial it all in. I even changed heaters and that’s having an effect as well. Summer went pretty well but I think I will back the lights off a bit when it gets hot again this year. See if I can slow things down a bit and still get good blooms.
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[zainal abidin]

Here under the Equator climates humidity is fluctuated during daytime it's very low around 40 % is not very good for the new stuffs that I bought eg. Vandas, easily dehydrated may kill the plants if the root system very poor. To reduce the casualty I always put under the heavy shade with regular watering schedule, summer is the worst.