FloraMax Silica contains 16% silica present as Mono-silicic Acid (“MSA”) and Meta-silicic Acid (“MTSA”)*.  Both of these compounds are bio-available forms of silica and are completely soluble in nutrient solutions.
This yields several benefits for hydroponic growers:
Improves the rigidity of stems and leaves.
Helps prevent leaf wilt during extreme heat.
Increases weight, potency and shelf-life of fruit.
FloraMax Silica is highly concentrated and readily absorbed by plants (Monosilicic Acid and Metasilicic Acid).
FloraMax Silica is highly stable – shelf-life exceeds 20 years (testing origins predate 1998).

* Reference:  Molybdosilicate Method 4500-Si D., Standard Methods for the Examination of Water and Waste Water, 19th Edition 1995, p4-118,119.  Prepared and published jointly by American Public Health Association, American Water Works Association and the Water Environment Federation.

Use
Add to the nutrient solution at a rate of 0.1 to 0.25ml per litre during veg and flower. Silica is also very effective as a foliar spray, mix with water(ideally filtered) at 3ml per litre, then spray the plants evenly just before lights turn off.

Frequently asked
FloraMax Silica contains Monosilicic-Acid-and-Metasilicic-Acid Plant available forms of silica? 
To ensure plant availability, silica needs to be present in the nutrient solution in a soluble form.  This is achieved by hydrating the silica molecule:
•  SiO2 + 1H2O  —>  SiO3H2  (metasilicic acid, “MTSA” – smaller molecule)
•  SiO2 + 2H2O  —>  SiO4H4  (monosilicic acid or orthosilicic acid, “MSA” – larger molecule)
Bioavailability of FloraMax Silica is confirmed via “silica-demand” analysis of re-circulating hydroponic nutrient reservoirs using *AWWA’s Molybdosilicate Method.

Why use a silica nutrient for hydroponic plants?
Hydroponic plants are often susceptible to leaf wilt and bud rot, especially when exposed to heat from HID lamps. Silica helps strengthen plant cells to prevent limp or weak growth.  Silica, known chemically as silicon dioxide (SiO2), is the chemical form that silicon (Si) adopts in plant matter. Silica is NOT the same as silicon.  Silicon is the stuff computer chips and car polishes are made from.

Combating heat stress:  FloraMax Silica is very effective for combating leaf wilt during summer heat.  Prevention treatment is best done by applying Silica as a foliar spray 3ml per litre.  This typically allows plants to endure ambient grow room temperatures upwards of 40 deg C (104 deg F).  Foliage remains rigid and turgid so that photosynthesis can continue unaffected.