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DIY Arduino PWM5 Solar Charge Controller (PCB Files and Software Included)
30W Portable Solar Power Generator
Arduino Solar Tracker (Single or Dual Axis)
Aquaponics Vertical Garden
ESP8266 Soil Moisture Sensor With Arduino IDE
SpectrumLED- An INSANELY Bright 200 WATT Variable Spectrum LED Panel
Hi CLEM2, While it is true that letting water stand open in sunlight for 24-48 hours will cause chlorine (toxic to plants) to dissipate, it will will do almost nothing to address chloramine (also toxic to plants and used in place and/or in addition to chlorine by most municipal water services for years now). Running tap water through a water filter that contains activated carbon and KDF elements will greatly reduce chlorine and chloramine levels. You can eliminate the remainder of chlorine and chloramine in your water by adding a small amount (~ 1/4 tablespoon per 10 gallons) of sodium ascobate powder (a specific form of vitamin-C available online and in local nutrition stores). -- Happy Growing! -Joe D.