New Grower Late season polytunnel grow questions

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All new to autoflower.net and to growing cannabis as well I think I may have effed up today.
I started out (very) late this year with 5 x Critical Rapido, 8 x Danes Blue Matic and 1 x Danes Nordic Pride. I am growing them outdoors in polytunnel in Denmark (56° north). All of them sprouted between July 19th and July 22nd and was transplanted into pots containing app 7 liter All-mix soil on August 1st.


For fertilizing I was recommended by the dealer where I got the seeds to get the BioBizz Try-Pack outdoor starter pack with Fish-Mix, Bio-Bloom and Top-Max and basically just follow the grow-schedule but starting out a bit easier as I am also using the BioBizz All-mix soil.
The soil has been wet since transplanting, and not wanting to do the rookie-mistake of over-watering, I haven't watered them until today. So I feed them a mix of 0,5ml Fish-Mix + 0,5ml Bio-Bloom pr 1 liter water. Each pot got app 1 liter of this mixture.
Then tonight I stumped upon Muddys excellent guide and realized that I probably should not have been giving them any Bio-Bloom yet as this will likely halt the veg-phase.


Now I am a bit bewildered. I am very late out this year and the long term weather forecast has changed a bit. It looks like it will be a more wet late summer and fall than I at first anticipated, so I am now worrying about mold in my upcoming buds.
On one hand I want a good yield, but on the other I also want to finish these girls as soon as possible to minimize the risk of mold. The dealer selling me the seeds assured me that the said strains are quite mold-resistant, but I guess they could easily be attacked and destroyed by mold. Unfortunately I can't put a fan in the polytunnel and can only vent the polytunnel by the wind going through the netted side-windows.


Did I make a huge mistake today by introducing Bio-Bloom at this early stage?

Can I feed my girls anything else to make them more mold-resistant?
 
Hello again.

I have another question.

After having read a guide on low stress training I am considering Low Stress Training (Tie Down Method) some, if not all of my girls.
The main reasons being:
  1. Get more sun to the lower leaves and buds for a (slightly) greater yield.
  2. Keep the plants so low, that none of raises above the side windows in my polytunnel
    I figure this might reduce the risk of mold as air is less moving around in the upper area of the tunnel.

Here is a couple of fresh pictures of one of my Critical Rapidos:
cr_01_003.jpg cr_01_blomst_002.jpg

and a couple of fresh pictures of one my Danes Blue Matic:
bm_01_003.jpg bm_x_blomst_001.jpg

I did ask about this in a danish grow forum earlier today. The only response from there is "Don't LST your autumn grow lacking light and time. The girls shouldn't be stressed more than necessary."

Looking for at second opinion, I would like to hear what you guys think of this matter. Is LST really to stressfull for a late autumn grow?
 
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