Well as I said, we agree that too much is bad, we dont agree about what is too much. Tap water that has 30ppm of silica or more is considered high (I dont know about well water, and I doubt most people use well water) and your soil might have silica but theres one problem with the one in the soil, it will also deplete quite a bit as shown in studies made for food crops (Im aware that fruits need more than vegs and so on but this is for every single comercial crop). I cant find one particular study that showed how after only 4 years (dont remember the crop, I think it was wheat) the land lost almost all of its silica and started giving smaller and smaller production every year until they decided to pay for someone to see what was going on and that study was born. Anyway theres plenty more, have 3 more:
A pot experiment was conducted to investigate the effects of silicon and phosphatic fertilization on rice yield and soil fertility. Three levels of silicon (Si) fertilization i.e., SiO2: 45, 135, and 225 kg hm−2 and the two phosphatic fertilizer i.e., P2O5: 15 and 45 kg hm−2 for each of calcium...
link.springer.com
I could keep going but I think that the one I sent you before this post and those 3 are more than enough hahaha. I do agree with the fact that bigger doesnt necessarily mean better quality but if I can get more and the same quality I will do that of course. Your particular case outdoors might not be the case for many other growers, specially growers that dont grow in high clay or sand soil, it depletes overtime.
And yes if you use too much you will rise alkalinity thats why you can only top dress every so often with DE, not whenever you feel like it. DE can be very harmful if you pass the dosage for bio mineral and synthetic, for organic you need to use a lot to bother the plants since 7ish ph more or less is totally fine. I still ph my water because it still makes it easier for minerals to be absorved anyway though. I trust your study but I also trust the studies I see in google scholar and I think they dont have to necessarily contradict each other, what youre saying is basically "too much silica is bad" which we already agreed on. How much is too much silica? Well that depends on the plants, the nutes you use, the soil and the water. If you say (I never grown in hydro) that 120ppm is what is adviced for hydro when it comes to silica, is still way more than what you will get with tap water, which you shouldnt be using for hydro anyway, and coco and arlite are not gonna release enough silica either.
"Especially if you are following the on bottle directions of a silica additive, you are likely giving you plant 3-5x more then it would ever need to thrive, and are probably damaging your resin content and making your buds kief easier then they would otherwise in the pursuit of nothing but bag appeal"
Yeah I have no doubt that many companies do that and not only with silica,
calmag as you mentioned is often the reason of N toxicity and charts that have
calmag sometimes have too much of it and you dont need it if you use tap water or/and and a line that has
calmag already incorporated in the base liquid or other supplement not only based on silica. I use my own calcium from eggshells made available with vinegar, not sure if youre familiar, probably you are, the ph of the vinegar goes to exactly 7 if you do it right and its full of calcium with an irrelevant ammount of nitrogen.
"
But the flower is hands down better without being overdosed on a mineral. And that applies to just about any specific mineral. Tastes better, smokes better, burns cooler, and better lung fill without it, kind of across the board. In my own personal experience, Too much silica does a similar thing to a flower that too much N does, resin head and kief wise, it just doesnt burn or stifle flower development like N tox does. It makes it prettier to look at, but thats about it."
Again, we agree, too much of anything is bad. That said, Ive been using silica for about 3 years now, 1 top dressing in veg and one in flower, not a lot of course like a couple of tablespoons in veg and then in flower I add a bit more because the silica in the soil has already been eaten for the most part. I also tried Rhyno Skin and it works but not so much so that the price is justified. I beg to differ in the sense that its only bag appeal, bigger buds = more surface for trichomes so more trichomes per square foot right? Asuming youre using the right ammount of silica of course, if youre losing trichomes because you dont know what youre doing with your nutes then its not worth it even if therye bigger.
"It's not the silica that raises the soil alkalinity though, its potassium silicate being broken down into base elements, and *Not* being immediately up taken or consumed by something. If your PH goes too high, a silica additive with potassium silica can actually burn your leaves with potassium toxicity very rapidly, ive had it happen a couple times years ago in DWC, Never even realized it was the silica additives causing the PH spikes until i removed them from the regiment either."
And it can be way worse than that, youre gonna cause a nutrient lockout if your PH is too high but thats why you dont use too much! Hahaha. In your case, if your water is loaded with potassium silicate then I guess for outdoors youre set, mine isnt and I guess that will vary depending on where you live. Even inside Spain which is minuscule compared to the USA tap water is very different depending on where you live.
"The best quality outdoor ive ever smoked was grown on nothing but compost and goat manure."
Both have silica, assuming the compost is balanced which I assume it was if the results were good (Proper nitrogen to carbon ratio). If I add
diatomaceous earth Im not gonna also use potassium silicate, that bottle is there because it was cheap and I use it as a ph up for my nutes, I only have PH down from
General Hydroponics, my PH up is potassium silicate (which is what some ph ups use anyway) but I very rarely need to make it higher (usually the first 3 weeks of flower only which is when an additive that I use with 3ph called alfa boost, plus Iguana Juice, plus
big bud and they all have acids that might leave it below 6.)
It's not the silica that raises the soil alkalinity though, its potassium silicate being broken down into base elements
Both DE and potassium silicate have a high PH before it breaks down and after it breaks dow, from 5 to 10 when it comes to DE (calcinated DE has higher PH) and the bottle I have of potassium silicate... well see for yourself
The bottle is so old that is losing the ink, thats how little I use it (as I said only for PH up and a little bit is enough, and I use DE so I dont really use this for anything else than that)
I think that we seem to agree for the most part like I said, the only thing where we dont agree is not needing to use any silica outdoors if youre using the same plot, for the same part seems like we are going in circles here, we agree that too much is bad we dont agree on the fact that silica supplements are useless outdoors, youre using well water that seems that has a lot of potassium silicate and thats not the case for most people. DE doesnt stay around for very long when youre watering constantly unlike other dry ammendments.
"Indoors, here, though, my own experiments have informed me, im currently in a context where cal-mag, and silica additives will be very beneficial though."
I bet! I only grow indoors and in my experience there was a milestone before and after starting to use silica, not a huge one, but noticeable enough that I kept using it every grow.
"My most potent lab tested run ive ever done. tested at 33% thc, was a bubba kush x gelato F2 pheno. I ran that plant with nothing but tap water, and flora micro and flora bloom in DWC *just to prove a point to a commercial grower friend in KC that the $4500 he was spending every 2 months on silica was pointless since he was using municipal tap water.** Didnt use cal mag, didnt use silica, didnt even use the flora grow. Micro, bloom, and municipal tap water.
Thats quite impressive, congratulations! But is not conclusive, would have been higher would you had use a little bit of silica and other micronutrients as additives? Probably, even though flora tripart has all thats needed. You DONT need to add silica to your plants, but is better if you give a bit, same with chitosan, hormones, etc... you dont need them for proper weed but its gonna help. You would have to run the same side by side and compare. Theres a point where you are actually going to long extents for little gains, but those little gains are what distinguish expensive weed from less expensive weed. At some point youre paying A LOT for a premium experience.
" Never even realized it was the silica additives causing the PH spikes until i removed them from the regiment either."
Thats not silica's additives fault but rather yours for not knowing that silica rises soil PH and you have to counterbalance it sometimes :P silica improves nutrient uptake if your PH is right.
"
Totally irelevant, but P.s. small light leaks dont cause hermies. Even stress bananas are a genetic trait and i have the self bred lineages to prove that one too lmao."
Agreed, outdoors they have the light of the moon so theyre used to certain levels of light during night cycle. As long as its not too much is okay.
Okay I think yes its time for us to discuss this further via PM if you wanna keep discussing it but I think its pretty clear what we think
1. Overusing silica or any other nutrient is bad: agreed
2. Using silica supplements outdoors is not necessary: agreed, but is way better if you do when your soil and your water dont contain enough silica, and that can happen if you use the same plot constantly.
3. Silica supplements are overpriced: that was my initial point and you stole it from me and made it your point

Im not gonna spend 24 euros in a bottle of potassium silicate nor am I gonna overfeed them with silica. And dont get me started with the 50-100 euros per bottle silica supplements like the one I mentioned from Top Crop. They can go f themselves. The only reason they are still in market is because of hydroponic growers with irrigation system that cannot use potassium silicate nor silicon dioxide on their own.
Conclusion: As long as you dont overfeed it with silica is fine, which can apply with any other nutrient, so this conversation is not only long but quite pointless actually hahahahahaha I think we all know that using too much of something is not good. Your friend that tried to overdose them on silica clearly didnt know what he was doing.
Also youre not gonna notice great difference if you only up your game in 1 thing, there's too many variables for just one nutrient to make a huge difference, is the combined effort of keeping it all at its maxium potential without using too much.