Subterra Penitus Farming combines ancient growing wisdom with modern engineering to produce clean fish and greens year-round — protected from weather, pests, and supply chain disruption.
*Planning/design targets, not measured or guaranteed performance. Subject to engineering review and witnessed commissioning.
Subterra Penitus Farming is a first-of-its-kind underground aquaponics facility in Penrose, Colorado. Built into the earth itself, the facility uses natural geothermal stability to maintain ideal growing conditions — without the massive energy bills of traditional greenhouses.
Fish and plants grow together in a closed-loop ecosystem. Fish produce nutrients. Plants clean the water. The cycle repeats — The current modeled design target is 99.7% water recirculation; actual performance requires witnessed commissioning and a 30-day ledger. Nothing is wasted.
No pesticides, no herbicides, and reduced weather dependency are design objectives pending validation. No long-distance transport. Just clean, fresh food — throughout the planned production cycle.
Tilapia are raised in temperature-controlled tanks on the lowest level. Their waste produces natural nutrients — ammonia that feeds the biological cycle.
Beneficial bacteria convert ammonia into nitrates. Moving bed bioreactors and trickling filters maintain perfect water quality — continuously monitored.
Nutrient-rich water flows to the grow beds above. Leafy greens and herbs absorb the nutrients, naturally filtering the water before it returns to the fish.
The current modeled design target is 99.7% water recirculation; actual performance requires witnessed commissioning and a 30-day ledger. The closed loop means minimal makeup water, zero discharge, and zero waste — a truly sustainable system.
Our aquaponics system produces both premium fish and fresh produce — all year, regardless of season.
Public performance figures are planning/design targets pending witnessed measurements, commissioning, and applicable approvals.
Underground construction maintains 52-58°F naturally. A fraction of the HVAC energy of above-ground facilities.
99.7% modeled recirculation target. Compare that to traditional agriculture's thousands of gallons per pound of produce.
No pesticides, no herbicides, no synthetic fertilizers. The fish feed the plants. The plants clean the water. Nature does the rest.
No winter shutdown. No weather dependency. No seasonal gaps. Consistent supply, throughout the planned production cycle.
Reflective film, LED optimization, gravity-fed water returns, and planned solar — engineered to do more with less.
Underground means physical isolation from pests, contamination, and external biological threats. Three-zone biosecurity protocol.
Grown in Penrose, Colorado. Not shipped from across the country. Fresh to market in hours, not days.
Fish and produce from the same system. Two products, one water source, one facility — maximum efficiency per square foot.
Whether you're a buyer, investor, partner, or just curious about the future of food — we'd love to talk.
Or reach us directly:
info@subterrapenitus.com