I think I'm answering the right question, but there may be a few ? here...
When starting a new res / grow using hydro, if you first add Potassium Silicate to the res water (assume RO for this to simplify) the PH will skyrocket up to past 9. That's fine, no plants or bennies yet to harm. If you let that sit / stir for a day, then come back and add PH Down (phosphoric acid) and the 2 battle it out, setting up a PH buffer of sorts and the end result of the chemical reaction is monosilicic acid in plant ready form (plus some PH buffering)
Mono-silicic acid has three primary effects on plants:
- Mechanical ā Builds structure and resistance to stress
Deposits silicon directly into the outer layer of the cell creating a rigid barrier and a more solid structure.
- Nutritional ā Increased and more balanced uptake of nutrients
Pressurizes the plant sap to allow a better and more even flow of nutrients throughout the plant circulatory system.
- Immunity ā Stimulates plantās immune system
Triggers the production of immunity compounds, as well as drawing silicon to the point of attack to rebuild and strengthen tissue.
1. MECHANICAL
Silicon is deposited in the cell walls creating a strong, rigid structure, much like a brick wall cemented together. Cells are able to maintain their shape amid environmental attacks. When the wind blows and bends a stem in one direction, cells on the downwind side are compressed. Silicon makes firmer cells that compress less when bent.
In the case of drought, stronger cell walls are better at maintaining water balance inside the cells. Imagine filling a water balloon ā the balloon is firm and taught. Then, as you deflate, the skin of the balloon becomes soft and yielding. This is why dry plants droop. Stronger cells keep their structural integrity for longer.
The improved structure also improves shelflife. Produce gets bruised less, and keeps its structure for a longer time.
2. NUTRITIONAL
Mono-silicic acid has a remarkable effect on the uptake of other nutrients. Think of it as a train engine that helps pull other ācarsā through the plant sap. Mono-silicic acid is particularly good at increasing the transport of heavy, immobile minerals like calcium.
When present, mono-silicic acid increases the pressure of the vascular system (like our own circulatory system). Imagine a hose filled with tiny particles of sand (nutrients). If a trickle of water (plant sap) moves through the hose, most of the particles stay put. If the water pressure is increased to a heavy flow, more of the sand particles are pushed through the hose.
Plants donāt have muscles in the same way we do. Instead, elements are moved around the plant by suction, pressure, and molecular interaction. Lower pressure, created by synthetic fertilizers and overwatering, makes heavier molecules less mobile. By increasing the pressure, minerals are more easily carried throughout the plant.
With higher internal pressure inside all other minerals, in various forms, are more easily moved throughout the plant to where they are required. This vascular pressure is especially important for larger plants with more branching as more energy is required to move nutrients along these complex and far-reaching pathways.
3. IMMUNITY
Attacking insects must somehow puncture the wall of the plant āskinā in order to suck the fluid, eat the tissue or burrow inside. By increasing the thickness of the cell walls, with silicon deposits, many of these tiny insects are unable to break the surface of the cell.
When it comes to pathogens, like fungi, itās important to understand that silica doesnāt kill the pathogen but rather makes the plant inhospitable to the pathogen. By blocking fungal spores from attaching, the plant maintains its health and strength. This is the best, most natural, preventative approach.
There are compelling studies too that show plants move extra silicic acid to points of attack and stress such as insects, fungi or breakage. This is much like when we get a cut and platelets in our blood rush to the cut to create a clot while the wound heals. The additional silicon deposits create even stronger tissue.
But this is for startup only as the PH swings it causes can do more harm than good. If you are beyond startup phase or are not doing hydro, my advice would be different.