Your 4 month girly clones are telling you to flip the light now…
Appears to be one helluva preflower event.
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Does it look like they may not be in full blown flower to you? I have no idea what “pre flower” looks like.
You’ve already stated you have had issues with your timer have you by chance stayed awake long enough for its set turn off time and been awake to see its turn on time personally i know ive had plenty of issues myself in the past with timers manual and digital hell i had a timer screw and my lights where on for a week and 3 days straight until i noticed one night i had no clue why they looked so bad once the timer was fixed they where good i guess long story short are you 100% sure your timer is good?
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Worse than a fox in the hen house, is the trouble from bad a timer.
Random checks support finding faults.
Power Outages that I don’t know about are also a problem for timed cycle growing.
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In the spring I had some tent raised clones (cut from flowering plants, and then fully revegged). I kept them on 24hr for 2 months until I saw conformation they went back into veg. (They held preflower all the way through)
I waited another 3 weeks until outdoor sunlight was enough =15hrs, and brought them outside. I was thinking I could continue veg outdoors for another 2 months…
But no, the abrupt difference between 24hrs and 15hrs WITHOUT slow transition+her in preflower+a now "possibly"unstable clone cutting+a Mediterranean strain that can flower at 14.5= straight into flower.
The worst part for me was we were gaining light, so it started flower, and then stopped, and just built single Leaf fans. Quite ugly.
My comment about yours in crazy preflower was in jest. No, your definitely.in. flower. At the risk of ending up like my story There’s no turning back … I’d Flip to 12, and look closely at your timer and all the buttons that make it work.
Why this even happened is quite strange
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Last spring I got 4 clones in April and had them on my patio for my out door grow. We bought a house and moved in early May…they were about 2 feet tall at that time, barely fit in the back of my Tahoe. We had beautiful weather up to that point, then it turned to rain and overcast, for 2 months! My outdoor photoperiods started to flower around the longest day of the year!
My solution was to convince the wife that I needed to finish them indoors in a tent, so I quickly ordered my 4x4, a light, fan/filter, etc. They finished off indoors first week of August last year.
So they will flip under crappy lighting conditions, not just once they get under 14 hours of light.
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Are your lights malfunctioning.?
Are you looking at my ladies?.
The 12/12 the off time becomes too cold (maybe). Recently, I went to 18/6 for a week (from 12/12). Now after the flowers have reveged, stretch seen, and single leaves are appearing in the tent. Time will tell, “beauty is only skin deep”, I hope ugly is not to the core. The seedlings should be just fine and I plan to boot the flowers at Christmas
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Clones carry over the age of the mother. If the mother was under 18/6, and you wish to keep them static; then you must increase the light interval. Even just giving them another hour of light is enough for them to sense the increase and continue in veg.
Lower light intensity also signals that the sun has moved further away. Similar to fall, as the sun moves further, naturally, the light hours change. The plants can sense this change in intensity, whether or not the light hours remain the same.
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I agree with this. Basically, your DLI was too low with the light you had them under first, so technically it thought you were at 12/12 lighting the entire time. (IMO, this sounds like the answer). Same way we check with photone. Lighting at 12 hours daily is less than 18 hours daily, with DLI or PPFD.
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