Heat Stress = revert to veg?

[Medley]

I had an HVAC issue which let the room get to around 120F for 12 hours, plants were on day 30 of 70 of flower.

The odd part is the plants looked fine, no wilting or anything, I contribute this to the roots being in the shade and cool and also having 1500ppm CO2 and running silica.

I fixed the heat issue and its been back to 75-80F lights on, 65-70 lights off.

They continued looking fine, no wilting, but now 2 weeks later are showing clear signs of minimal bud production and growing 1-2 leafers everywhere and continuing to stretch, classic reveg behavior.....is this from the that one 12 hour stint of 120F+? It almost looks like there is a light leak (but I know there is not).

Ran this strain before, same nutrient regiment so I doubt it's related to that, the only thing I can think of is that heat issue, but I thought if it was going to cause a big issue like this they would have shown immediate signs like wilting.

I am now wondering whether to just start over or to let them keep going and see how long it takes them to restart flowering.

 

[I'mback]

I had an HVAC issue which let the room get to around 120F for 12 hours, plants were on day 30 of 70 of flower.

The odd part is the plants looked fine, no wilting or anything, I contribute this to the roots being in the shade and cool and also having 1500ppm CO2 and running silica.

I fixed the heat issue and its been back to 75-80F lights on, 65-70 lights off.

They continued looking fine, no wilting, but now 2 weeks later are showing clear signs of minimal bud production and growing 1-2 leafers everywhere and continuing to stretch, classic reveg behavior.....is this from the that one 12 hour stint of 120F+? It almost looks like there is a light leak (but I know there is not).

Ran this strain before, same nutrient regiment so I doubt it's related to that, the only thing I can think of is that heat issue, but I thought if it was going to cause a big issue like this they would have shown immediate signs like wilting.

I am now wondering whether to just start over or to let them keep going and see how long it takes them to restart flowering.

Let them go, it will add to experience learned/gained.

 

[Medley]

Let them go, it will add to experience learned/gained.

I am tempted too, but that's a lot of wasted time and expenses if they turn out like crap. Just curious if anyone has encountered a similar heat stress condition and similar odd growth afterwards so I can learn much faster from their experience

 

[PurplePotion]

I had a branch (thankfully only 1/10th of the plant) do this when my drip line clogged and I caught it too late.. was probably 4 weeks into flower. Had 2 drip points in a 7 gal pot; 1 was totally clogged, the other was just barely allowing a drip through every so often. Thankfully the entire plant didn’t reveg but the portion that did was garbage when I chopped everything. Mine started throwing fat single bladed leaves and lots of pistils, the actual flower building was almost nonexistent after that. Take some pics of the plants. If they’re too far gone you’re better off scrapping them and starting fresh.

 

[NEED 4 SEED]

Have you checked your light timer? Stay there till after shutdown and watch if it does.

 

[Medley]

I had a branch (thankfully only 1/10th of the plant) do this when my drip line clogged and I caught it too late.. was probably 4 weeks into flower. Had 2 drip points in a 7 gal pot; 1 was totally clogged, the other was just barely allowing a drip through every so often. Thankfully the entire plant didn’t reveg but the portion that did was garbage when I chopped everything. Mine started throwing fat single bladed leaves and lots of pistils, the actual flower building was almost nonexistent after that. Take some pics of the plants. If they’re too far gone you’re better off scrapping them and starting fresh.

So yours did it from lack of water? I have automated waterings twice a day (1.5 gallons through 5 gallon pots, 30% runoff, coco) and everything seems to be fine in that regard, pots are wet every time I check. What I'm worried about is what you said happened to that branch...if they will recover or not.

Have you checked your light timer? Stay there till after shutdown and watch if it does.

I have cameras in the room and fast forwarded through the last few weeks, lights on proper schedule.

 

[PurplePotion]

So yours did it from lack of water? I have automated waterings twice a day (1.5 gallons through 5 gallon pots, 30% runoff, coco) and everything seems to be fine in that regard, pots are wet every time I check. What I'm worried about is what you said happened to that branch...if they will recover or not

Yep. I run a warm room also, but lack of water was definitely the culprit. If more than 1/2 of the plant is throwing big fat single leaves and lots of pistils w/ minimal to
no flower development I’d trash them, but I can’t give my real opinion without good pics.

 

[nickman]

Sounds like the same thing happened to his entire plant. Must be some sort of reaction fr9m stress...!!!... that’s too bad man. Four weeks wasted pretty much...!!!...

My rooms run a bit hot too... it really gets on my nerves sometimes... I still use HIDS though so...!!!...

 

[Medley]

Alright guys. I'm a dumbass. The cameras I have in the room switch to night mode (black and white) right when the lights turn off....and they were doing that when SOME of the lights turned off.

It turns out the timer for a few of the back lights had somehow reverted itself back to the veg ON/OFF times, (even though I swear I checked and rechecked every timers schedule multiple times) and fast forwarding through the CCTV I didn't catch it since when it switched to black and white I just assumed they all shut off and skipped to the next day. The period they were staying on was in the middle of the night so I never actually was awake to double check in person.

So now that my dumbass-ness has been confirmed.......where should I go from here? Basically they got 2 weeks into flower then some of the lights started staying on 20/4, so they've had veg photoperiod for the past 3 weeks so they would be on week 5. They all have stretched almost into the lights at this point and all are just making 3 finger leaves and pistils.

I have heard once you stress them like this hermies are common.....don't want to deal with that but I also don't want to waste all the time and expense I've invested into this run so far. I replaced the offending timer...should I just trim/defoliate these and let em run?

Thanks for all the help and advice based off my incorrect assumptions.

 

[Medley]

Have you checked your light timer? Stay there till after shutdown and watch if it does.

Shoulda just listened to you and stayed up till 2am and checked haha

 

[PurplePotion]

Yikes. That’s a bummer man. If you have other plants ready to fill the flower room, I’d start fresh and chalk up the loss. If you don’t have anything else ready you could take your chances, but it sounds like it’s gonna be a loss either way my friend ;(. What little bud did grow on the affected area of the my plant was almost nil; a few calyxes strung together at most. If there’s any way to run all the lights through one timer I’d recommend doing so to avoid yourself this trouble in the future. You can use a 110v timer with a 2 pole contactor on a 220v circuit if a single timer won’t handle the load of all the lights together.

 

[Medley]

Yikes. That’s a bummer man. If you have other plants ready to fill the flower room, I’d start fresh and chalk up the loss. If you don’t have anything else ready you could take your chances, but it sounds like it’s gonna be a loss either way my friend ;(. What little bud did grow on the affected area of the my plant was almost nil; a few calyxes strung together at most. If there’s any way to run all the lights through one timer I’d recommend doing so to avoid yourself this trouble in the future. You can use a 110v timer with a 2 pole contactor on a 220v circuit if a single timer won’t handle the load of all the lights together.

I mean, now that they are back to 12/12 they SHOULD just go back to flowering, I hope. Not really sure. I actually use 40A contactors but have three different timers to stage the on times. Probably should just hook up to one timer.

 

[PurplePotion]

I mean, now that they are back to 12/12 they SHOULD just go back to flowering, I hope. Not really sure. I actually use 40A contactors but have three different timers to stage the on times. Probably should just hook up to one timer.

Yeah there’s really no telling what they’ll do, but I imagine density is going to be greatly affected either way. The affected area on my plant was junk. I foresee lots of loose, stretched out flowers. How many kW worth of plants are we talking here? Still interested to see pics also.

10-4 on the multiple timers, good idea to even out the starting load. A lot of ballasts have a random start feature built in anymore though (takes anywhere from 0-30sec for my ballasts to turn on, so none of the are firing at the exact same time). Might check and see if yours do?