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You get more DO with a lower temp but at 64° P uptake starts to be inhibited*. I run mine at 68°. And, yeh, there's no reason to run at 74° if you have a chiller. *I wasn't able to remember if it was potassium or phosphorus that was inhibited until I came up with the saying "At 64°, I can't...

From germination until early flower, a tent temperature of up to 85° will maximize growth of the plant. The purpose of the vegetative stage is to let the plant create a large infrastructure with a lot of branches, short internodal space, and a large number of small leaves. That "morphology" is...

@marzig brings up a good point - if opening the tent will drop the temperature that much, it sounds like you're not getting a lot of air flow through the tent. One of the advantages of having temps in the 80's (up to the mid-80's) is that the rate of metabolism increases as temperatures...

I switched to Jacks 3-2-1 for RO after my second "pretty bottle" grow. With the exception of my last grow, I run the same formula was drop to chop. For my last grow, I decided to try a "Bloom booster - why not? What can possibly go wrong?" Never again. A total plummeting-pH shit show.

If your experience is limited, it does seem your expertise isn't. That's good to see. "I guess at the end of the day, it’s only one seed and 3 months of growth before the next run so not a terrible loss if it goes tits up." Great attitude! I botched my grow this Spring - I kept adding more...

Re. organics - just pulling your chain. I'm a software engineer (30+ years) and I'm more comfortable with the numbers side of things. Hydro + dry ferts is fine by me because it's quantifiable. Lots of growers are very happy with organic and soil and get great results. Re. N toxicity - no...

The Care Kit has all the tools you might want to use. I'd just go with an old toothbrush. I clean the probes each time I do the monthly calibration and there's really nothing to it.

No such device. I have a 2' x 4' tent, as well, and when I tried to grow in the summer, I ended up with a 14k AC unit to AC the entire 20 x 20 garage. A 2' x 4' tent is cramped to begin with but to get a compressor in there and create an enclosure that's big enough to vent heat out means that...

I appreciate your reply. "I know 20-25 DLI is way too low in early flower/late veg." - I understand the reaction to "turn down the light" but I do believe it's counter-productive. "it may have changed ever so slightly." - agree. At first it was very high angle but it has dropped. One factor...

In the most recent photo, I don't see anything to indicate that the plants are "freaking out". It looks like the leaves at the top of plant on the right have lowered their angle. Re. temp and RH - temp and RH on the floor in the corner is the temp and RH on the floor in the corner. It wouldn't...

Plants in pictures 2 and 3 look good. Plant #1 is "praying" and looks to be on the cusp of too much light. A DLI of 30 should be OK but that's the PPFD over the course of a day so it can be misleading. What's your hang height, PPFD, and light schedule? A photo of the entire grow would be...

Slight discoloration at that age is not unusual. What is unusual is the dead leaf tips. That could be a nutrient imbalance - the question is what's causing the nutrient imbalance. Pictures of the entire plant would be helpful. Some food for thought here and here.

I checked out the GML site and I think they're a good light. I give kudos to the manufacturer for publishing their PPFD maps and I like the fact that they have a lights with different spectra. [edit] Just noticed the comment about getting a PAR meter. I went that route after trying to get good...

In DWC, the water level of the bucket/reservoir should be about ½" below the bottom of the net pot.

My posting of 12:35 PM from yesterday shows root growth in a 10 day old plant. My argument is that allowing footballs to grow in the reservoir works out pretty well. "the thought was" - whoever thought that did not understand DWC. That approach did not kill the plant but, by not allowing roots...

Good to hear. I've seen vids by those YT personalities and I'm glad that you found a light that you're happy with.

Oh, this thread is about dental implants. How disappointing.

I've seen that for soil grows and I don't know why that's the case because the plant has no idea how big a container it is in. If it was just a question of container size, how could plants grow well in soil outdoors where there is no "container"? That sorta makes me think that is has nothing to...

That's great! I'm jealous—I run a 25' hose out the back of the garage and run a sump pump.

As with pretty much anything about agriculture, there are no "magic numbers" for net pot height. General guidelines work pretty well, one reason being that there are so many variables that it's impossible for an individual grower to do everything "correctly". It's a plant and mostly grown from...