Help! Heater went out and plants got too cold

I came to check on my plants after the coldest night of the year and found the heater off and the plants unwell. I was set to harvest in about 2 weeks. What should I do? Please help!

Ya i dont want to appear dumb or to state the obvious but i think i have your problem nailed down to one of three things, turn the heater on, fix the heater if its broken or worst cade scenario buy a new heater....

then harvest in two weeks

It is not the heater.
The plants are drowning in too large pots.
Add to that that it looks like soil.
So when it gets cold the bacteria that converts urea to ammonia can keep ticking over while the ones that process ammonia goes dormant.
Wanna guess what happens when you pour ammonia on your root zone?

I would pull the plants out of those pots, shake off the loose soil and replant in a smaller pot with dryer medium.

ANC said:

It is not the heater.
The plants are drowning in too large pots.
Add to that that it looks like soil.
So when it gets cold the bacteria that converts urea to ammonia can keep ticking over while the ones that process ammonia goes dormant.
Wanna guess what happens when you pour ammonia on your root zone?

I would pull the plants out of those pots, shake off the loose soil and replant in a smaller pot with dryer medium.

Click to expand...

I appreciate your advice and I'm sure you're right but I'm certain they got too cold or maybe even froze. Here is a pic from 2 days earlier

ANC said:

It is not the heater.
The plants are drowning in too large pots.
Add to that that it looks like soil.
So when it gets cold the bacteria that converts urea to ammonia can keep ticking over while the ones that process ammonia goes dormant.
Wanna guess what happens when you pour ammonia on your root zone?

I would pull the plants out of those pots, shake off the loose soil and replant in a smaller pot with dryer medium.

Click to expand...

Does that affect your advice at all? It sounds like a good plan. Also, they were in an outdoor structure, I brought them in the house tonight

Well this time there is cold outside and you should place it indoor unless there is good amount of sunlight because under the sunlight the plants grow more frequently and the second thing is that don't use heater to warmer the atmosphere because the plants too get adapted to the environment once the heater is off they cannot survive in cold conditions and this id the problem u are facing put them under the artificial lightning or use 100 watt bulb that will heaten the atmosphere which is ideal for its growth. third thing use a bit warmer water for watering. all these solutions will definitely help you. and here are Few tips to harvest your marijuana .

Frost bit, N is too high and some were not exactly stable either.
Cold is bad. If the soil & roots got too cold like ANC said. Your bound for trouble...looks like all you can do it try and see if you get any recovery.
I doubt it, yet it may struggle to continue a bit at the core....Leaves look like toast.

If it starts to dry up, dead.

Fix the damn heater....!

Dr. Who said:

Frost bit, N is too high and some were not exactly stable either.
Cold is bad. If the soil & roots got too cold like ANC said. Your bound for trouble...looks like all you can do it try and see if you get any recovery.
I doubt it, yet it may struggle to continue a bit at the core....Leaves look like toast.

If it starts to dry up, dead.

Click to expand...

Yes, I tested the soil after this happened and N is WAY too high. Right before the freeze I adjusted the ph (it was at 7, 7.2) and I now know I used 2X the amt needed. Smh. These guys were in veg for only 6 weeks because too many germinated and I ended up with 30! I'm in a highly unfriendly state and I live in town with 3 police officers on my street. I was able to get down to 7 after separating males and giving a few away.
So I transplanted all of them in fresh soil as suggested and brought them in the house. I harvested 2 and the others are hanging in there