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🌱 HYDROPONIC SUBSTRATE BENCHMARK

Grodan Rockwool vs. Cocopeat: Hydroponic Yield & Cost Model

Compare volumetric water content (VWC), vegetative-to-generative drydown steerability, Calcium buffering, and recycling costs for high-wire vine crops and berries.

🪨 Horticultural Rockwool Zero CEC (Inert)
  • Steerability: 10/10 — Instant moisture and EC response to irrigation pulse.
  • Air-Filled Porosity (AFP): 15-20% at full saturation (Zero root anoxia).
  • Chemical Buffer: 0 meq/100g — 100% grower nutrient control.
  • Disposal: Recyclable brick manufacturing or landfill cost.
🥥 Organic Cocopeat (Coir) High CEC (Buffering)
  • Steerability: 7/10 — Slower drydown due to microporous water holding.
  • Air-Filled Porosity (AFP): 10-14% (Degrades over multi-year cycles).
  • Chemical Buffer: 60-100 meq/100g (Requires Calcium pre-buffering).
  • Disposal: 100% Compostable agricultural soil conditioner.
⚖️ Engineering & Financial Modeling Disclaimer:
Equipment efficiencies, utility tariffs, and payback periods are modeled using standard industrial benchmarks (ASABE S640, ASHRAE, Fraunhofer ISE). Actual farm operational performance may vary by manufacturer binning, regional energy contracts, and crop transpiration demand. Always obtain vendor performance warranties and consult certified Professional Engineers.