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If I understand correctly, most heavy metals in organic grows come from amendments. Other products can contain them as well. @Rurumo has done extensive work here, and even has a thread for it. https://www.rollitup.org/t/heavy-metals-in-rock-dust.1048521/

I'm with you. I vegged a plant for nearly six months with three to four toppings per branch, and the buds it grew were kinda big, but clustered. I live in a dry climate (my RH hovers at 25% in my tent today), but I was still fighting humidity problems. The plant itself generated an internal...

I have the same light and this is almost exactly what I do. I know the system could be pushed harder, but I'm good with a mellow pace. I've had some light problems at high intensity with this MH model, so I just stay back a bit from that line (I have low RH and a high VPD). Just adjust as the...

I do very similar work (holes in the garden like pots, locally source for materials, recycle, spend little money). I like to see the changes your soil undergoes! I enjoy seeing what it's like to use such an approach in a desert climate. Considering the value of this thread to general knowledge...

That's nearly the same as my pilot project--just the rocks were in the pot and it sat in the tray. Cool stuff!

I worried a bit about that, but it seems to wick the water well. I don't have much experince with how these new beds react, but it's the same gravel that was in the pilot project. I didn't do any measuring of my soil depth and where it got wet or anything official, so my answer is by feel. In...

I kinda want to do a setup with a wick like you do so I can get a feel for the difference, because I noticed in my pilot wicking-bed project (a 15gal pot 18" tall) that the water level in the reservoir (a tray in this case) determined how saturated the soil became (less gravity to fight, I...

I don't know its real makeup or gradation. It's a story almost a decade long. But it's basically leaves, grass, and local topsoil--which is kinda heavy in bentonite (Great Plains river valley). But I have input used play sand, random coarse sand, and inert topsoil from the batch plant--at...

Seedlings detwisted and started to grow again. Damn hot vermicompost! It usually sets me back a week or so, but I'm only growing for myself. Haven't topped off the reservoirs yet, but I will add about a gallon of fresh tap water today. I am relatively sure the cannabis roots are into the SIP...

I don't know how much lobster meal or gypsum you put in there, but I know calcium deficiencies in soil are rare, especially when using tap water. I see you are using RO, but I would still take a closer look or wait for some better advice. Typically signs of calcium deficiency (which is what your...

What kind of SIP you gonna do? Hoping to see some process pictures!

I still find your response to be contextual and informative. I'm always gathering "tools" and their best applications!

Seedlings are in the beds, mulched by trim from mothers, second set of leaves just starting. They're twisting a bit as the roots stretch from the nutrient-buffered peat (MG seed starter) into the hot vermicompost. Clover is sprouting! I filled the reservoirs for the first time. They each hold...

I haven't used wood chips for mulch indoors. I suppose it would work to keep moisture levels consistent, but it would take a while to break down and add to the soil if you want to leave it in there. I source a lot from outside and decided not to worry about bugs other than to effect Integrated...

Looks like it works great! I considered putting more effort into the overflow drain, but didn't. lol I will have a tray on hand in case I go over. Still, grommets are cheap, and I have some funny pipe on hand. Thanks for the pictures! Also, I'm out in my shop and move water with buckets and...

Totes are 17gal. I made a mark on the inside of the tote at 4" and filled 3/4" gravel close to the mark. Outside I measured from the ground up 3-1/2" and drilled a 3/16" hole. That should give me an air gap of no less than 1/2", but likely larger (I see only gravel through the holes). I plan...

I didn't remember it was you, but now that I look back, it was definitely your Hugel Kulture build that was like a landmark to me! I will likely source everything I can from my yard or, in case of needing more wood, the river. I need to learn more before I do much anything, though. For now I am...

Yes, I did some studying and understand clover better. Your distinction about "fixing" nitrogen jibes. It's the recycled/mulched clover tops/nodes that provide the soil with food! I want to add #8 to your List of Why Clover's Good: it attracts and sustains nematodes! I don't have experience...

That's good to know. I amended the soil enough to last that long. Hell, I'll be watching the plants carefully, too! But that's good to know. Looks like I need to spend some time studying clover and nitrogen fixers!

I love all this! I am lazy and cheap, so I will see if I can get some spent barley from the brewery down the street. Maybe some fresh alfalfa from my neighbor could do double-duty. Not sure what else I might mulch with--likely trimmings, leaves, grass. I have piles of moldy leaves. Some mold is...