Power Si supplies silicon as stabilised silicic acid rather than potassium silicate. That distinction matters: silicic acid is the form plants actually take up, it works at low dose, and unlike potassium silicate it does not send your reservoir pH climbing or risk precipitating out when mixed with other nutrients.
- Power Si Original: The core silicic acid supplement for vegetative growth and structure, plus the v2.0 formulation - see all silicon additives.
- Power Si Bloom: The flowering-stage version, plus Bloom v2.0.
- Athena bundles: Athena Stack with Power Si, and Athena Stack with IPW and Power Si - see the wider Athena range.
Why choose Power Si?
Because most silicon products are potassium silicate, which is highly alkaline and awkward to mix. Silicic acid goes in at low dose, will not wreck your pH, and is immediately plant-available. If you have avoided silicon because of the mixing hassle, this is the version that removes it.
Power Si FAQs
When do I add Power Si to my mix?
Unlike potassium silicate, it does not need to go in first. It is stable and does not require special ordering in the reservoir.
Original or Bloom?
Original through vegetative growth and early flower, Bloom through the flowering stage. Many growers run Original in veg and switch at flip.
Why buy Power Si from The Hydro Bros?
We stock the Power Si range in full, ship discreetly across the UK and Europe, and know these products because we use them. With excellent customer reviews on Trustpilot and staff who actually grow, you get the right kit first time.
