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I wish I had all my pix. :wall: The earliest I could find of that plant was 5/7 I've been taking clippings off of it for a good month or so before that. I remember tying it down 3 or 4 days before that pic and tightening the strings every day. The pic above was taken 6/24

The one on the left was vegged for about 10 days after I first spotted roots and transplanted to soil. It had been in 13/11 for about a month when I took this pic. Note that these are clones from a sexually mature mother. I'm guessing your going for a short plant? All three of these are about a...

If it were me I would stop watering for a day or two. Maybe dig a little hole off to the side and see what the soil near the bottom of the pot looks like. Maybe set up an old phone for time lapse and see if the plant is doing its wiggle thing. But then again I've only popped two seeds in my...

If you're into DIY, try an ESP32 CAM. They're $10 each and decent for the price. You'll need to learn arduino programming but once you have that down you can use the ESP32 to do some automation and monitoring,

COBs were the best option for DIY before quantum boards came out. But they're less efficient than discrete LEDs and have that narrow beam like you said. I never had a problem with COB reliability though. Do you think maybe COBs might have gotten tweaked during installation? If you flex them a...

I wish your photos were clearer but if this looks a bit like this or this then its another vote for overwatering

Cannabis forums are surprisingly hostile, but this is one of the more friendly places I've seen.

Could something be chomping on your plant?

Is that a vent hole so the air roots can get more circulation?

Yes, but only as an afterthought cause I had a spare light strip. Can't say if it help any but it didn't hurt either. This guys took side lighting to the extreme.

It will still work but an extension will create more load on your portable's exhaust fan motor. If its just a back up it might be okay. I would get the booster to be on the safe side. Is it a single hose or dual hose? A single hose will draw air from the room and expel it out the duct. Which...

Some reference material for cannabis and UV. If there are any other papers anyone wants access to just give me a shout and I'll see if I can get them.

I think 475nm is under used in LED light. Its still photo synthetically active and deficient in just about every white LED.

@salmonetin agricultra was what convinced me to switch from reptile UV lamps to something with more 285nm wavelengths. However their UV light originally started as 285+365nm and was later switch to 385nm while citing the same literature. :o I haven't gone through all the research they cited on...

Thank you, I'll put @Randomblame's posts on my reading list. I've noticed more potency and more odor when I used the spread spectrum UV LED but there are still a lot of variables I have to account for and eliminate.

I have no intention of being rude when I say this, its hard to convey tone on line, but is there a paper on this? I've read of the "synergistic" effect of UVA, but "synergistic" is a marketing word isn't it? I have't read every paper on UVR8 but this response curve seems to be pretty concrete...

I was running a mix of 285, 365, 395, and 420nm LEDs. I used a spread just in case this whole UV thing turns out to be like the red/blue vs white light debate. But if the UVR8 photo receptor is what we're trying to trigger for more THC production, would it be more efficient to run just the...

Do you have a way to measure heatsink temps with and without the fan on?

What driver are you using?

Are there any substitutes for storing a bluelabs ph pen? I dont have KCl on hand.