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greentomato
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Just wanted to see if anyone has got any experience using this?

Got a pack of it in my last order for soil n bits. Usage instructions are pretty vague and I’m not actually that clued up about what it does for plants other than strengthen cell walls/stems? 

but yeah if anyone has used this, how often do you use it? Can it be used in conjunction with other stuff or best watered in by its self? Foliar or irrigation?

growing in soil, cheers!

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Topic starter Posted : September 3, 2021 6:30 pm
twisted1, Mossbeardmitch, Chillbert and 6 people liked
TempleGrower
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Can you post a pic of the package? IMO, silica supplementation is not worth it. Most growing mediums have more than enough silica available to the plant so adding silica is almost always unnecessary.

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Supersoil recipe (by me!) --> https://percysgrowroom.com/organic-super-soil-recipe/

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Posted : September 3, 2021 6:43 pm
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greentomato
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This is it 

RAW Silica contains 45% Silicon Dioxide which is the highest concentration of silicon dioxide available to the home gardener. RAW Silica is flowable and suspend-able in water and naturally available to the plant. Since RAW Silica is a natural form of silicon dioxide, it is PH neutral and does not cloud when added to water. RAW Silica can be used during all stages of growth and bloom for optimal stem and cell wall strength. It is a beneficial supplement to all feeding schedules. Works in conjunction with all nutrient and feeding programs.

0398726C 3BC3 4446 90CE 1B6DA29E5855

@templegrower 

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Topic starter Posted : September 3, 2021 9:49 pm
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monkeydo
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Like TempleGrower, I don’t use silica. It did not seem to offer much in my style of growing as I saw no difference when it was added.

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Posted : September 4, 2021 1:25 am
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Stootie
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@greentomato I remember getting an email about Silica from Growell a wee while back, I just had a look and theres some info on their site about it and a RAW feed chart pdf you can download.

Dont know if youve already seen it or not but might be worth a look 😉 growell  co.uk

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Posted : September 4, 2021 6:35 am
Woolie
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Coco grower so silica yea il use it in 1 or 2 feeds and thats it ,and the plants are so easy to train , like rubber in some cases , but after going way over it's 2 that works , have heard of it supercharging other parts of the soil or medium , but really can't see that either , think the silica companies started that rumour , I would if I had tonnes of it Laugh Fist Bump  

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Posted : September 4, 2021 7:43 am
BubbleHok
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I use Diatomaceous earth in coco, it serves both the silica purpose and also controls pest larvae In the medium, I mix it in with the coco and perlite and will add some later on if needed. The plants love it and i kill 2 birds with one stone. 

I feel like a, like a slice of butter... melting on top of a big-ol' pile of flapjacks... yeah.

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Posted : September 4, 2021 8:12 am
Chillbert
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@greentomato hi mate 

i have used some of the RAW range.. not silica yet though.. the RAW products are very good imo and sourced appropriately.

my biggest quibble with adding (liquid) silica supplements is they tend to make the pH rocket up and i dont like using excessive amounts of acids (vinigar / lemon / pH down) to correct it!

i prefer to preload the soil with several sources of silica (mostly very slow release) including pumice/ rice hulls/ sand etc and for a quicker release diatomateous earth ..

beware too much silica can inhibit uptake of Potassium at low pH's (hydro guys!)

Time to pop some more beans 😗

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Posted : September 4, 2021 8:56 am
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monkeydo
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I do use perlite in my coco but like TempleGrower mentioned with the other stuff, perlite shouldn’t be available to a plant for uptake as I understand it, it’s basically glass. Never have used diatomaceous earth in all my gardening because it’s so wet here but I can see where it could have some use as an additive BubbleHok. Filing that for a closer look when time and material allows.

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Posted : September 4, 2021 8:59 am
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I do use Plant magic Bio silicon with the ammended Sohum but only once a week in veg and only 1ml per litre...have had it for a while

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Posted : September 4, 2021 2:33 pm
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greentomato
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Nice one everyone!! 
in my head seems like a bit of a pointless product but like everything you see some people swear by it and other people say it doesn’t make a bit of difference.

I do use diatomaceous earth so good to know it adds silica as I just use it for fungus gnats!

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Topic starter Posted : September 4, 2021 5:33 pm
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TempleGrower
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I honestly think that this is just a big, expensive bag of diatomaceous earth. It even looks like it in your pic. I looked on RAW's site for any sort of guaranteed analysis or something that tells you what's actually in it. Couldn't find anything.. and their spokesperson, Harley Smith (lol), uses a lot of vague terminology like biogenic, which just means 'made by a living organism', which literally describes diatomaceous earth as it's the tiny shells of marine phytoplankton called diatoms. He also used the descriptor 'flowable, which I've never heard used in my experience as a geologist/soil scientist in any context. Makes me go 'hmmmmmm.....'

Silica in this form is utterly insoluble in water. It basically is just floating around in suspension in the water, not dissolved. Moreover, plants uptake silica not in the form of SiO2 (silicon dioxide) like diatomaceous earth is, but as orthosilicic acid, which forms in the presence of root exudates and other chemical reactions in the soil. And actually, most mediums, whether soil based or coco have enough silica already within their matrix for the plants (except 'pure' hydro like DWC obviously). BUT, the worst thing IMO, is that right on the front of the package they note that 'This product does not benefit dicot plants'. Cannabis is absolutely a dicot (2 cotyledons). So. Yeah. Feel free to use it but don't attribute any positive results to it. Snake oil!

And just so you know I'm not full of shit lol, I am actually a geoscientist by degree and so silica is quite close to my heart, and not literally like those stupid crystal worshipping hippies. I hate when I see misinformation being spread about things I know a bit about so... I've even seen other silica supplements that actually had growth stimulants like vitamin B and other non-silica components that probably would have had an effect on the plant, but would have been misinterpreted as being due to the silica. So do be careful out there. And absolutely post here! I'll figure out wtf the shit is... 😤 

snake oil

Also, if you want to have a really good read about Silica uptake in plants, this paper is very excellent. I think it's possibly where a lot of the assumptions about silica (drought resistance, stress resistance, etc.) came from (see the section "Role of Silica in Stress Relief).

Life's a garden...dig it - Joe Dirt
Supersoil recipe (by me!) --> https://percysgrowroom.com/organic-super-soil-recipe/

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Posted : September 5, 2021 6:06 am
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BubbleHok
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@templegrower Well there you go, great info mate, I started using DE years ago for pest control because my grandad used to use it, he swore by it for all sorts of pest, I had always heard it added some silica but from that info I guess not, at least it kills off fungus gnat larvae so still useful. I never have used a straight silica supplement anyway, I've always purchased food grade DE and used it mixed through my medium and then as a pest solution later if required. Good to know its not worth it unless in DWC. 

With Diatomaceous earth i know its diatoms and from what i understand they are fossilized sea critters, but are they sourced as a slab of sedimentary rock and then ground down to produce the powder? or is it actual shells they just crush up? just something I've always wondered and figured as a geoscientist you would be the person to ask lol 

I feel like a, like a slice of butter... melting on top of a big-ol' pile of flapjacks... yeah.

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Posted : September 5, 2021 7:03 am
twisted1, TempleGrower, Chillbert and 6 people liked
TempleGrower
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Posted by: @bubblehok

With Diatomaceous earth i know its diatoms and from what i understand they are fossilized sea critters, but are they sourced as a slab of sedimentary rock and then ground down to produce the powder? or is it actual shells they just crush up? just something I've always wondered and figured as a geoscientist you would be the person to ask lol 

Yep, both true! The shells pile up over hundreds and thousands of years and eventually become lithified into the sedimentary rocks that are mined and ground into the DE we all know and love. The famous White Cliffs of Dover are very similar actually - not made of diatom shells but other types of marine organisms' skeletons called coccoliths. These are made form calcium carbonate tho, not silica dioxide. Same end result tho!

Life's a garden...dig it - Joe Dirt
Supersoil recipe (by me!) --> https://percysgrowroom.com/organic-super-soil-recipe/

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Posted : September 5, 2021 7:55 pm
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BubbleHok
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@templegrower brilliant thanks mate, interesting stuff. My grandad was really into minerals and geology. One of my fondest memories of him is when he took me to the big museum in Sydney while they had a geology show, we spent all day at the museum and he explained all the fossils and what they were, crazy how the little things bring back the fond memories. I suppose I'm just one of those stoner's that likes history lol

I feel like a, like a slice of butter... melting on top of a big-ol' pile of flapjacks... yeah.

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Posted : September 5, 2021 9:19 pm
Woolie, twisted1, Hart and 6 people liked
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