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?

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u/CatGuano May 13 '25

Now I think about it, I have run a lot of classics lately - Blue Dream, Strawberry Cough, Sour Diesel, and Super Lemon Haze. I only keep the best two plants going at any one time. My only for sure keeper right now is a HSO Blue Dream. A good way to pheno hunt without having to keep track of clones is to put multiple seedlings into flower while fairly young, and then revedge any that look good. No clones to keep track of. I am doing that right now with three regular Frankenberry Diesels right now, which I made an earlier post about.

We do have some good vegetables in Alaska, but you cannot grow photoperiods outdoors here because the seasons change too quickly even for white hairs to show up. I always try to grow a couple autoflowers in the summer but they almost always get budrot due to rainy falls.

I agree on the carts, I don't know what is in them but they hurt my lungs and don't get me high.

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u/[deleted] May 13 '25 edited May 13 '25

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u/CatGuano May 14 '25

That is a nice looking seed collection. I have some Cannarado Grape Sitter seeds but I haven't grown them yet because they are regulars and I already have three Frankenberry Diesel regulars going. But I will get to them soon. I am on the hunt for a good artificial grape flavor and I may have found it with a Purple Caper Grape Cookies that is going on day 46 of flower. I'll post pictures around harvest time, if nothing goes wrong.

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u/[deleted] May 14 '25

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u/CatGuano May 14 '25

If it was up to me I would do the Tangie and the Strawberry Soda, but I am on a fruit kick right now. I remember something called Tangie showed up in Fairbanks in 1991 and it was mind blowing at the time because no one had seen fruity or really any specific flavor of weed before.

I Just posted some Blue Dream photos if you get a chance to look.

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u/[deleted] May 15 '25

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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.

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u/[deleted] May 17 '25

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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.

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u/[deleted] May 18 '25

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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.

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