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Thanks for your visit. I have moved this to a grow journal (in my sig) and that thread will probably be more frequently upated. I invite you to pop in and read all about my drama with the cold.

Yes those stupid covers! A (mostly) failed experiment. They do seem to stimulate growth very low down, but at the cost of keeping the roots too moist. Binned! Thanks for your visit and input. What're you growing?

A happy camper I think.

It is super dry here in Winter, but I'm also just playing it safe as I suspect the heater might dry out the air quite severely and what I have here are tropical sativas as I understand. Regarding the temp fluctuations, they really are only 3 degree fluctuations, more or less consistent to a...

Sorry, connection issues, lol.

Oh by the way, regarding my earlier post with pics. That little mutant freak is not one of my grow box plants, but one of the youngsters toughing it out in the cold on my workshop roof. 20 / 21 survivors so far after one week!

Oh by the way, regarding my earlier post with pics. That little mutant freak is not one of my grow box plants, but one of the youngsters toughing it out in the cold on my workshop roof. 20 / 21 survivors so far after one week!

Yes it takes about 55 secs to warm up with the heater on low setting. This is virtually unchanged regardless the ambient temp (fluctuates between about zero at midnight to around 75F at noon), due to the combination of size of the box, ventilation setup and power of the heater being unchanged...

This has been a harrowing week with temperatures plummeting into the thirties and less. As can be seen in the pics below, my little guys were not happy and had all but stopped growing entirely. I looked around for a solution to the issue and ended up removing the glass in between the lamps and...

Thanks purple blues. So where in the world are you?

Thanks cbtwohundread, much obliged.

Thanks Fried, a little frisky those two little girls. It happened while I was still constructing the box. Trying my damnedest to get them to revert, but alas with mixed success.

This has been a harrowing week with temperatures plummeting into the thirties and less. As can be seen in the pics below, my little guys were not happy and had all but stopped growing entirely. I looked around for a solution to the issue and ended up removing the glass in between the lamps and...

Thanks Spliffman, that's much appreciated. It's a work in progress as I am about to report in a moment. Had some serious trouble with heat, but that's now sorted. Come back soon and read all about it!

Neo, I managed to get hold of a thermometer today that will let me monitor the temps at canopy level w/o opening the box. I was shocked to discover my night-time temp to be a mere 54 deg F! No wonder the little things are looking so bedraggled. BTW, the ambient temp in the room is at 51 deg. I...

Guys, I've been barking up the wrong tree. Have been researching a bit and now know for sure what burned my plants like that. The moment I read about it, it struck me that I gave all the plants a light misting from my atomizer, but forgot that the bottle still had fish-emulsion in it from...

Thanks dude and welcome.

Thanks Tahoe. When are you harvesting btw? Must be getting close enough to taste now.

I like your thinking. Using the very heat that might be the enemy in summer as my ally in Winter is inspired and it will only need one tiny fan to move the air. I'm thinking some 50mm pvc plumbing pipe and a large valve I happen to have lying around. Then it's a simple matter of opening the...

Only fish-emulsion, but not very often. I suspect it is a combination of the extreme cold we've been experiencing as well as poor circulation; a situation that has now been rectified. If the cold continues, I might remove the glass-shield to allow some more of the heat from the lamps to reach...