That was relatively easy.

Nice...only 3 wires too...

Yeah, that won't last! You're supposed to imagine it with a bunch of power trigger relays hanging off the sides and low voltage wires coming in from an AC unit. It's gonna be so purdy.

While I'm imagining, I'll picture it topless with a cheeseburger and a beer too!

Thanks SME. First good laugh of the day.

I'm surprised at how elevated CO2 levels linger after I've been working in the garden. It was reading above 950ppm after an hour of installation work in there, and it slowly came down to ~450ppm over approx. 10 hours. If I'm generating that much CO2 then maybe I won't see a massive increase in yield with CO2 enrichment. Or perhaps the calibration is off...

I've been reading up on ideal CO2 concentrations for cannabis, but there seems to be quite a bit of disagreement about it. Many sources state that 1500ppm is ideal, while others contend (based on studies on wheat and rice) that concentrations over 1200ppm can be harmful. Care to throw in your two cents, SME?

After I wrote that I had to go make me a cheeseburger...now I want another.

I've always felt that 1500 is more of a max range while SOME plants might take more there is a point of diminishing returns. 1200 is certainly not the max amount. When I'm consulting, I suggest 1200-1500 so try 1300 and ramp it up to 1500 between harvests and see if you can find the sweet spot for your genetics. I wouldn't expect "massive" yield increases but even a modest increase is worth the cost. Plants can also tolerate more heat when you supplement co2. I've also heard a theory that higher daytime temps under LED help with yield but I'm not sure about the details on that so I'm waiting for somebody to test it. I wouldn't want to spend much time in a room over 1000ppm though, makes my head hurt just thinking about it...

Did someone say insomnia??

Everything seemed to happen at once there. Harvest, failing dehumidifier, starting co2 injection, rerouting exhaust, buying clones, finding spider mites on the clones (red and two spotted mites ), etc. Good times.

I set the controller to 1300ppm of co2 like you recommended SME, and it's measuring in the 1200-1300ppm range all day. It's pumping out quite a bit of co2 to keep up since I am now circulating air between the flower room and the rest of the basement, which I use as a lung room/drying room. It's probably a little better for co2 levels than exhausting outdoors like I was previously, but the ppms drop pretty quickly after the dark period cutoff anyway, so it is either dissipating through the basement at a high rate, or the plants are taking it up faster than I had anticipated. I can't really observe the plants' uptake rate myself until I get AC and seal the room...

Which reminds me that you had recommended a portable AC unit, SME. It was my understanding that portable AC units, no matter how well sealed, always end up venting some of the air from the garden outdoors. I have a 6" exhaust port that I'm not using for the lights anymore, so a small portable AC unit would be great if it didn't leak stinky ganja smell into my neighbors house. Have I overlooked something?

You know, this journaling stuff is kinda like therapy. Maybe I can sleep now. 4 hours of sleep is enough, right?

P.S. How are you doing SME?

I've heard of insomnia, i should have taken my Ambien hours ago. I hope 4 hours is enough, I have VA appointments today.

Some portable AC units have an intake and an exhaust...or you can do odor control in the room with a carbon filter or Ona Gel. If you exhaust into an attic or another room before it goes outside you can use ozone but ozone isn't real good for living tissues, plastics or CO2, IIRC.

How am I doing? It's been one of those days... Unfortunately, it's been one of those days for a year and a half. Remember my data loss? Last week my laptop hard drive failed too, losing a little more data but not nearly as much as before. The added cost getting my computers running has set back my grow again, now I don't have enough money to get going again and I'm not sure how long that will take. One of the people I was going to ask to invest in my next grow borrowed 20 bucks from me yesterday so that plan went out the window too. I don't know if you remember a TV show called HeeHaw but one of their songs went: "If it weren't for bad luck I'd have no luck at all. Gloom, despair and agony on me." That's my theme song....but I'm trying to change the music. I just can't seem to catch a break. I'm so tired of being tired...

How are *you* doing?

Ouuuuuuuuuuuhh GADGETS!!!!

I never saw that before. I need me some of that!

Another HDD failed? Damn! Have you been waving giant magnets around or what?

I hope your VA appt went well. The sooner they fix you up the better, 'cause I want to see how you rock 8kw!

Back to the salt mines for me... I have to figure out my AC situation in the next few months, but for now I'm up to my eyeballs in gardening tasks. SCROG has solved one problem (low yield) and created another (lots of trimming). CO2 is only going to make things worse. "First world problems" though, right?

I'm gonna snap some pics of my leaves in hopes that you can help identify my nutrient deficiency/abundance/lockout issue. I've been looking at the guides online but none of them seem to match with what I'm seeing in my garden...