주요 사실

• Size: larger reservoirs buffer pH and EC fluctuations better; minimum 20 L for small systems
• Light-proof reservoirs prevent algae growth — use opaque containers or block all light
• Keep reservoir temperature at 18–22°C (65–72°F) to maintain dissolved oxygen and suppress pathogens
• Top up with plain water (not full nutrient solution) when solution level drops — plants drink more water than nutrients
• Full reservoir changes every 7–14 days maintain nutrient balance and hygiene
• Monitor pH and EC daily; large daily swings indicate plants are actively feeding