@2Hearts
NOW were talking!
I really do get it now....and.....your right.......BUT, how many people can
hold 73.4 F ? I can hold +/- 4% RH and about 3F.
That's rather advanced for the "closet" or "hobby" grower!
I respect your technicality! I keep my grows/rooms as tight as I can and do keep both bloom and veg within optimal VPD values - for each respectively!....To
most people doing that with 2 days of 98F and then 4 days of 68-76F and RH jumping up and down mid summer, not to mention the winter problems to deal with....The effect of VPD is, for the most part either lost or not even heard of for vast majority of people looking for help with their over/under feed and watered "first grow" plants!
I think this discussion would have been better suited for the "Advanced Marijuana Cultivation" where you would actually run into those of us who would understand what your talking about!
I mean really....This felt rather game like as it was not really clear where you were going with it....AND, I have to disagree about telling or more like confusing the poor folks just attempting to actually grow out a plant with as much quality as
they (for their level of expertise) can manage!
Take a look around at the questions about just how to control their temps and/or RH....and do it with next to zero (0) dollars (or Quid, etc) to do it with! Not everybody (at least to start with) has the kind of capitol to invest in a "perfect" grow setup! Many move down that road one step at a time....(how do you eat an elephant? = One bite at a time!)..
I can throw out papers and talk cellular level changes due to light absorption exposure limits or what ever....But I try to make this "mystery" of growing seem simple and easy to understand. That's how I try and give my answers to these questions....
I mean I
Really do respect your point! I respect the idea of honesty! But sometimes (MOST), being exact and technical is ,,,,,, well to be honest, beyond the actual understanding of the poster as far as his skill level is concerned. Many and I mean MANY grows are kept in the VPD limits not by intent,,,,but by maintaining close growing tolerances in recommended temps/RH/air turnover for the stage of growth....How many starter level books do you see actually mention VPD?
I can NOW tell you GROW!
You, I (and some others here) could have some wonderful long discussions on various topics....Some start in the "Advanced" thread and sometimes, some of us, will unintentionally have a long one in a thread on a related topic in even the NEWBIE central thread.....I always hope that those that are reading along among the novice growers actually
learn something from those....NOW I must say that I hope they learn something from
this one too!
BUT, let me take a moment to say to those that are going "oh shit! I have to fix that VPD problem I have, so my seedling stems are not purple!"....Hold it, take a breath, slow down....This is not going to "harm" your plant.....If you follow those temp and RH limits you were reading about in Ed or Greg's or Jorge's book.....Your going to be just fine! This is something for you to begin to want to control down the road (if need be) when you actually have everything else dialed in...OK? Lets worry about growing that plant(s) of your to finish as best as you can and keep improving down the road.... As you go, you improve what you can as you can do it! No problem in taking time to get growing at the "WOW, THAT'S AWESOME" level.....It took us ALL time to get there.
BE PATIENT!
I LIKED this discussion on "purple".....I like the points you made....I like the posts of others attempting to make a counter point...
I think many were confused by it's purpose.....I still disagree on there being non stress induced purple strains or pheno's (opinions eh?) This was a healthy and informative thread - once we got inside your head and could understand better the point.....I hope others agree with that....
I wish there was +rep.....you would get some from me!
I hope I did not appear troll like.....you didn't to me....
Peace on 2H!
Doc
..... Where do you find those