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See if you can get silica gel desiccant beads in bulk. It's pretty easy to get 20kg bags on line where I am. Try to avoid the purple ones, I've read that the chemical that turns them purple is classified as a carcinogen in the EU. Pour a layer of beads on the bottom of big box with a lid. The...

Lifting the pot is a good way to figure out how much moisture is in the pot. Are your pots sitting directly on the floor or is there something keeping them from touching the floor? If you're planing to use color to track the progress of your plants, remember to lock the camera's white balance...

Those things are wildly inaccurate in my experience.

Because DOI: 10.1105/tpc.113.119446 Low doses of UV-B light (280 to 315 nm) elicit photomorphogenic responses in plants that modify biochemical composition, photosynthetic competence, morphogenesis, and defense. UV RESISTANCE LOCUS8 (UVR8) mediates photomorphogenic responses to UV-B by...

My 2 cents on 285nm (actually 280 and 275nm but close enough IMO ) Luminous Devices XST-3535-UV-A60-CD280-00 The 60 degree lens limits the area that the LED covers, plants under the LED get burned while plants off to the side exhibit less "frostiness" Luminous Devices...

Alphabay>bitcoin>bitcoin mixer>address of empty apartment in my building. I couldn't find any one selling seeds on the darknet any more though since legalization.

This and water. Maybe some kind of agricultural surfactant if I could get my hands on some.

Epsom salt is magnesium so I doubt it will fix a calcium issue, but I've read those two are interlinked so o_O I had EDTA-Ca at the time so a foliar spray would have been my choice of treatment.

Check this out for UVB/UVA wattage/area figure. https://www.agricultra.com/the-metarail-uva-uvb-light I'm running at about 1/3 of their power rating and with a mix of 365nm and 395nm (as well as some 420nm cause how can you not have 420nm:hump:). Anecdotally it seems to work pretty well.

I repeatedly expose my girls to 280nm, 365nm 395nm, 420nm and reptile UV lights to the point of burning the leaves and haven't seen them hermie. Are you going to try to repeat the exposure and see if you can repeat the results?

Thank you! The interveinal thing was throwing me off. :wall:

I thought calcium issues started with interveinal spots. Do they also start on the veins?

I first noticed an issue with this plant when these brown spots started showing up on the veins. I ran through the usual checklist and couldn't figure out the issue. Posted on another forum and didn't get an answer. I ended up harvesting this plant prematurely but I would still like to nail...

It might help but I've had something similar and they only pull a couple ml of water out of the air per hour. Compare that amount to the amount of water you're adding to the plants per day and it hardly makes a dent. I'm using a separate dehumidifier mainly to dehumidify when the lights are off...

This seems pretty easy to impliment.

Your setup is so much neater than mine! You might find this interesting.

Strangely, I get more of a sense of accomplishment with a stealth micro grow than I get from a 4x4...

I might be late to the party but if you pop the plastic dome off the LED bulbs you get more light and directionality from the same bulb.

ESP32 About the same price, much much faster, +wifi and bluetooth.

Those peltier module dehumidifiers don't really do anything. I'm also in a hot and humid environment (for about 9 months out of the year) and grow in a small space. The separate AC and dehumidifier combo is what I'm using until I can get a purpose built unit made.