moe.red
hydro helper
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Said a different way, for the plant to be the best version of itself, all parameters including VPD must be in the green zone.In terms of high and low VPD yes you can run outside the ideal ranges but you also need to compensate for that. A low VPD needs a higher concentration of nutrients and vice versa under the same light conditions.
While you may not physically SEE the impacts of doing this or severe physical problems. There is more than enough scientific evidence that the plants will not only be healthier but also grow faster under ideal conditions of VPD…. Especially under circumstances when increased co2 in the atmosphere or o2 in the rootzone are used. Thats because those benefits are increased on a % of the base growth rates.
Co2 for instance shows increased resistance to to heat and water stress. But that does not mean that the plant will grow as healthy or fast in those conditions as they would in ideal conditions
It's OK if you can't maintain that, the plant won't fall over and die. But if you can, results will be better.








