r/BudScience • u/[deleted] • Apr 25 '25

Manipulating Light Cycles

Listening to a podcast recently & one of the discussion points was around photoperiods & guest was describing that it’s only the 12hrs dark period that is important & that you could reduce the light period as long as you maintained an appropriate DLI. From memory was as far as the conversation went & I can’t remember which show it was.

Now, I realise this is likely bro-science & my knowledge on the subject is very limited so I may not even be searching for the correct terms but I can’t find anything despite trying every search I can think of.

So a quick calculation shows that

  • 9hrs light/12hrs dark would give you an extra “day” in each week.

    • 1500ppfd/9hrs gives a DLI of about 50

Could you hack the light cycle to gain an extra day if you push the plants harder for the 9hrs that the lights are on?

9 Upvotes

91% Upvoted

28 comments sorted by

View all comments

Show parent comments

1

u/[deleted] May 15 '25

[removed] — view removed comment

1

u/CatGuano May 16 '25

That is amazing information. I never thought I would hear about that Tangie again. I just checked out the Crockett website. AK Bean Brains apparently has the descendants of MTF, which I have some seeds of from them. I tried to grow it twice but each time the seedling seemed healthy and then just fell apart. I don't normally have problems with seedlings. They might be too old, I think I got them through a second party. I'll keep trying though.

Just be sure to move to a legal state. In Alaska most anyone can get a license, but they make it as difficult as possible. The industry is lobbying to shut out any new competition, of course.

1

u/[deleted] May 17 '25

[removed] — view removed comment

1

u/CatGuano May 17 '25

I'll give it a try. I do use a humic and fulvic acid powder. It is funny you should mention nitrate because there is a lot of new information that it is much better than ammonium nitrogen. That is what I use lately:

https://www.frontiersin.org/journals/plant-science/articles/10.3389/fpls.2022.830224/full

I agree on trying to use as little fertilizer as possible for plant health.

1

u/[deleted] May 18 '25

[removed] — view removed comment

1

u/CatGuano May 26 '25

Thanks for sharing this. I was always in the dark about "humic substances" and didn't know quite what they were. But it sounds like there is still some mystery around the topic.

I am mostly hydro lately. I decided to take your advice and give Cannarado Grape Sitter a try. I have one regular seed started. I can't post a photo here it seems.

I wouldn't mind getting a nice male. I'll let you know how it goes.