From Engineer to Hydroponic Farmer: A Part-Time Passion That Grew
In a quiet village in Angat, Bulacan, Aldrin Castro stands before two greenhouses sheltering nearly 600 heads of pristine Olmetie lettuce. “This hydroponics is more of a hobby or a part-time job,” he says—though the scale and sophistication of The Green Cup Hydroponics tells a different story entirely.
By day, Castro works as a computer engineer in the IT industry. By dawn and dusk, he’s transformed into a precision farmer, applying his technical mindset to agriculture with remarkable results. His 37-day harvest cycles yield robust lettuce at 35 pesos per cup, generating approximately 20,000 pesos gross per harvest from his 48-square-meter greenhouse.
What began as a modest ten-by-ten-foot DIY structure has evolved into a 120,000-peso bolted-frame greenhouse featuring NFT (Nutrient Film Technique) systems, sophisticated irrigation controlled by threaded valves, and monitoring equipment that guides every decision. Castro wakes at 5:30 AM to check pH levels and TDS readings before his 10 AM shift, managing the entire operation solo—sowing, transplanting, harvesting, and packing—all while working full-time.
His secret? Engineering discipline meets agricultural passion. Castro researches obsessively, learns from online hydroponic communities, and implements lessons before problems arise. He hardens seedlings under controlled indoor grow lights before outdoor transplanting, alternates plant sizes for optimal sunlight penetration, and maintains strategic relationships with both direct customers and resellers to spread market risk.
“I read about other people’s problems even before I experience them myself,” Castro explains, embodying the proactive mindset that’s turned his “part-time hobby” into a thriving agricultural enterprise—and a blueprint for how technical expertise can revolutionize traditional farming.RetryAother title, no colonThe Computer Engineer Growing 600 Lettuce Heads Before His Day Job Begins
In a quiet village in Angat, Bulacan, Aldrin Castro stands before two greenhouses sheltering nearly 600 heads of pristine Olmetie lettuce. “This hydroponics is more of a hobby or a part-time job,” he says—though the scale and sophistication of The Green Cup Hydroponics tells a different story entirely.
By day, Castro works as a computer engineer in the IT industry. By dawn and dusk, he’s transformed into a precision farmer, applying his technical mindset to agriculture with remarkable results. His 37-day harvest cycles yield robust lettuce at 35 pesos per cup, generating approximately 20,000 pesos gross per harvest from his 48-square-meter greenhouse.
What began as a modest ten-by-ten-foot DIY structure has evolved into a 120,000-peso bolted-frame greenhouse featuring NFT (Nutrient Film Technique) systems, sophisticated irrigation controlled by threaded valves, and monitoring equipment that guides every decision. Castro wakes at 5:30 AM to check pH levels and TDS readings before his 10 AM shift, managing the entire operation solo—sowing, transplanting, harvesting, and packing—all while working full-time.
His secret? Engineering discipline meets agricultural passion. Castro researches obsessively, learns from online hydroponic communities, and implements lessons before problems arise. He hardens seedlings under controlled indoor grow lights before outdoor transplanting, alternates plant sizes for optimal sunlight penetration, and maintains strategic relationships with both direct customers and resellers to spread market risk.
“I read about other people’s problems even before I experience them myself,” Castro explains, embodying the proactive mindset that’s turned his “part-time hobby” into a thriving agricultural enterprise—and a blueprint for how technical expertise can revolutionize traditional farming.