FAQ
Frequently Asked Questions
What is hydroponics?
Growing plants without soil, with the roots taking up water and nutrients from a solution. See the Hydroponics Basics guide.
What is the easiest hydroponic system to start with?
Passive systems such as Kratky or wick systems have fewer parts that can fail. Compare them in the Systems guide.
Do I need to change the nutrient solution?
Yes. Replace it on a regular schedule and sooner if it smells, turns cloudy or grows algae. See Nutrients.
What pH should hydroponic plants be grown at?
Most crops grow well in a slightly acidic range, but requirements vary by plant. See pH and EC.
Can I grow hydroponically indoors?
Yes, with enough light. A bright window suits some plants, but most indoor setups use a grow light. See Lighting.
Which plants are best for hydroponics?
Leafy greens and herbs are common first crops. Fruiting plants can be grown too but need more light and support. See Plants to Grow.
Why are my roots brown and slimy?
This often means too little oxygen or warm water, which is root rot. See Problems.
What equipment do I need?
Most setups need a container, net cups, growing medium, a fertilizer made for hydroponics, meters and lighting. See Supplies.
