structural intergrity by
humboldt nutrients is their si product.
It contains 6.0% silicon derived from silicate according to the website.
Now this is pretty vague because both potassium silicate and sodium silicate can be used to get the silicon amounts. You can use potassium silicate but I would stay away from sodium silicate because it simply adds another salt into your medium. Since they do not say which they use....I would shy away from it.
Also there are product which contain more concentration of silicon in the bottle than that. And...it is derived from potassium silicate in their listings.
I remember recently this came up before about who's silicon had the best bang for the buck. ....found it!
This was the list I came up with for most of the commonly found silica suppliments
Advanced nutrients, Rhino Skin (1% silica, 80.00 per 4 litres)
Botanicare,
Silica Blast (2% silica, 35.00 per 4 litres)
Dyna Grow,
Protekt (3.7% silica, 54.00 per 4 litres)
Dutch master, black bottle silica (below 4.9% silica, 23.00 per litre)
Dutch Master, Gold range silica (below 4.9% silica, 18.50 per litre)
Hydro-grow, potassium silicate (26.5% silica, 19.00 per 4 litres)
Yellow bottle, silica bloom (53.2% silica, 53.00 per litre)
adding in....
Humbolt nutrients, structural integrity (6% silica, 85.08 per 4 litres)
hope this helps in your decision
