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Hydroponic Gardening

Hydroponic Gardening

Min number of participants 1
Age 10+ yrs.
Safety support by adult Not required
Min duration 30 min.
Cost Medium
Environment Indoor

Grow vegetables, herbs, and flowers year-round in a soil-free nutrient solution indoors — a clean, efficient, and surprisingly productive way to garden without any outdoor space.

The Essentials

  • Start with fast, forgiving crops like lettuce, basil, or mint before trying fruiting plants like tomatoes.
  • Check the nutrient solution's pH regularly — most vegetables want it between 5.5 and 6.5, and drift outside that range blocks nutrient uptake.
  • Keep the reservoir water aerated with an air stone; roots need oxygen just as much as nutrients.
  • Give seedlings 12-16 hours of light a day from a grow light if there's no strong natural sunlight nearby.
  • Change the nutrient solution every 1-2 weeks rather than just topping it up, since salts build up unevenly as plants drink.
  • Watch for algae growth in the reservoir and tubing; keeping it light-proof and covered stops it before it clogs the system.
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