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Yeh, I get it. 30+ years in software, including three years of Apple, so I've been around for a lot of changes. Simple fact is that Americans are expensive. "You can have it good, you can have it soon, you can have it cheap—pick two."

What @solakani said. The leaf temperature offset will be a negative number because the leaf surface is cooled when water evaporates from the leaf during transpiration. There's a very thin layer on the leaf surface where the temperature is lower and that helps cool the plant. Strange that...

"RTFM" - :-) Sounds like someone who's worked in tech support.

What model light is that? Is it the Lumatek ATS200?

What's RH and air flow like? Have you done any other grows with this many plants in that tent?

Seedlings cannot take up nutrients until they sprout their first true leaves. The cotyledons provide nutrients because the root system is not mature enough to take up nutrients. By the time the first true leaves have sprouted, the root system has matured to the point where it can take up...

I responded to this thread a while back. I just skimmed that thread (page) so there's good info re. environment there. There's a graphic below that shows the 10 parameters of the grow environment. Are those conditions pretty much the same or have things changed? 1-1.5 gm is not what I...

Got it. The first two columns look good. I don't know about watering schedule since I'm a hydro grower. Before I run my mouth off with a lengthy discussion of light levels for cannabis, what are your thoughts about the light and CO2 levels that are recommended?

What information did you provide?

A PITA but, in the scheme of things, a minor "stepping on of the dick". For my Winter grow last year, I didn't like the idea of having to clean the tank in my humidifier so I added a little hydrogen peroxide. Just a little. You know, just the tip. Over the next few weeks, I kept refilling...

Great picture! ("Turn it up to 11")

Got it. The 1080 value is for the Grow King. The QB750, as in the 750 watt light? That's a "big honkin' light"!

That's a lot of light but, if your grow can handle it, the yield is definitely there. Insofar as quality is concern (meaning levels of secondary metabolites), they're slightly and significantly increased as you go higher from, say, 800 but you're also approaching the level where chances of...

Looks like a KEF? No wonder the plants (and grower) are happy! The 1474 reading? Something's not right because, per the manufacturer, that light generates 1080µmol (the PPF). If that's correct, the PPFD is off because PPFD cannot be higher than PPF. PPF is the amount of light a fixture can...

You're generating far more CO2 than the bag but it's not the limited output from the bag that's the issue. Insofar as the CO2 staying in the tent, not gonna happen if you've got good ventilation. During lights on, plants are taking in CO2 so, from the perspective of retaining CO2, sealing up...

Thanks for the update on the standalone mode. Re. the open container - "somewhat working" :-)

Plants are looking really good. Love the under canopy light. A researcher for Fluence released a video on YouTube recently with results of their research in under canopy lighting. Re 1100 - I've grown at 1000-1100 (measured daily using an Apogee) and my experience echoes what Dr Hawley, the...

I'm not familiar with the settings for the Cloudforge when it's working standalone (I use it with a Controller) but, per this page, the device will run at mist volumes between 0 and 10 and is activated by VPD and humidity triggers.

First step - you will get > RH just by putting open containers of water in the tent. The larger the surface area the better, so a baking pan would give you high evaporation. If you've got an extra fan, put it next to the container and aim the airflow over the top of the surface of the water.

Great looking plants!