Aptus
Aptus Regulator, the silicon additive most asked for by name: bio-available silicic acid that strengthens cell walls for thicker stems, tougher leaves and plants that handle heat and stress.
In StockAptus
£112.46
About Aptus
Why Aptus
Aptus, from the Netherlands, made silicon usable in every medium by supplying it as silicic acid, the form roots take up directly, at doses measured in drops rather than millilitres. Regulator does not swing the pH the way potassium silicate does and mixes cleanly with any feed.
Using it
Add it to the water first, at the label dose, from early growth to the last weeks of flower. The rest of our silicon range is under Silicon Additives.