Label the picture. Write the name next to each letter.
Six small cutaways of hydroponic systems, lettered A to F. A: a wide tray of potted plants, partly flooded with water, above a tub with a pump and a timer. B: one pot of growing mix on a tub, with a cloth wick hanging down into the water and no pump. C: a sloped channel with a thin stream of water along the bottom, fed by a pump in the tub below. D: one net pot in a lid, roots hanging into water that sits well below the lid, with no pump. E: pots of growing mix in a shallow tray, with a thin tube above them dripping water onto each pot. F: one net pot in a lid, roots hanging deep in the water, with an air pump and bubbles.
A · ebb and flow
B · wick system
C · nutrient film
D · Kratky
E · drip system
F · deep water culture
Answer in your own words.
In which system does the water drop, so the top roots hang in air?
Which system floods a tray, then lets it drain?
Why does a deep water culture tub need an air pump?
Draw or explain
Which system would you pick for a classroom windowsill, and why?