Silica Shield

Ortho Origin offers the best bioavailable form of silica for plants. This is H₄SiO₄.

PLANTPOTENTIAL
ORTHO ORIGIN
Orthosilicic Acid · H₄SiO₄

High-purity plant-available silicon
Neutral pH · Ultra-low EC

The active ingredient is Orthosilicic Acid, which is the only form of silica that plants can absorb directly. This supports stronger cell walls, enhances stress resistance, and promotes healthier growth.

Silica is also known for its ability to increase calcium uptake by plants. Calcium is one of the more difficult spore elements for the plant to uptake. 

Available in 100 ml bottles.

Neutral pH and ultra-low EC indicate a very pure formulation with virtually no added salts or other nutrient salts. Combined with the absence of NPK, this is consistent with a product based on orthosilicic acid (H₄SiO₄), rather than a conventional potassium-silicate fertilizer. Orthosilicic acid is the plant-available form of silicon taken up by plants. Scientific link

Therefore it is not mixed with other fertilizers (NPK's) and therefore has a very low EC.

Is does not interfere with your fertilizer strategy.

EC measures how much dissolved salt and mineral content is in a liquid.

• Low EC = very few dissolved salts/minerals
• High EC = more dissolved salts/minerals
• EC close to zero = very little dissolved material that conducts electricity

Our product is almost salt/ mineral free.

Also our product has a neutral PH around 7. Other products without H₄SiO₄. which need to have a certain PH to stabilize the product. For example  

Beware: 

Silicon can influence the uptake, transport and distribution of essential nutrients such as potassium and calcium. These interactions depend on the crop, growing conditions and nutritional status of the plant, so maintaining a balanced nutrient supply remains important when applying silicon.

High silicon concentrations have also been associated with albinism in strawberry. In the study by Lieten et al. (2002), silicon supplied as potassium silicate was associated with increased albinism in ‘Elsanta’ strawberries. Albino fruits contained higher levels of potassium and nitrogen, while calcium was lower in some samples. Importantly, the study did not demonstrate that a potassium deficiency caused the albinism.

This highlights an important point: silicon application should be considered as part of the plant’s overall nutrient balance, rather than as an isolated input. Excessive silicon concentrations or an imbalance in the nutrient solution can have unintended effects on crop development and fruit quality.