Flex Farm Components
Seeding & Germination
Water, pH, & TDS
Transplant & Harvest
Hydroponics Knowledge
100

Name one major part of the Flex Farm.

Root Chamber, Light Tower, Tank, Grow Panel, Tank Lid, Dipstick

100

How many seeds go in one rock wool cube?

One

100

What does TDS stand for?

Total dissolved solids

100

When are seedlings transplanted into the towers?

2 weeks after seeding (or when leaves are above the hole)

100

One advantage of hydroponics vs. soil

Less water, faster growth. fewer food miles, less power

200

What is the function of the water pump?

To circulate water & nutrients

200

What happens if cubes are overwatered during germination?

Mold, root rot, poor germination

200

What is the target TDS formula?

Base + 700ppm (+/- 100)

200

What is the danger of damaging plants during transplant?

Plants can be squished when cubes are inserted.

200

One disadvantage of hydroponics vs. soil

high initial cost, reliance on electricity

300

How do grow lights support sustainability in indoor farming?

Provide year-round light, reducing food miles.

300

What 4 things should be on a tray label?

Planting week, variety, transplant week, unit number
300

Why is pH balance important?

pH controls nutrient availability 

300

What should you use to clean the units?

Soapy water and a rag

300

How does hydroponics address food deserts?

Provides fresh food where land is unavailable 

400

What is 1 component necessary for proper water circulation?

Reservoir (tank), pump, tubing

400

Why must rockwool be soaked before planting?

To make sure the seeds have water to germinate.

400

How do you use a TDS meter?

Demonstrate it

400

When should you clean the drip tubes?

Every week

400

Why is hydroponics important for sustainability?

Saves water, reduces land use, lowers food miles.

500

Why is each major component of the unit essential?

Ensures water/nutrients, support, and healthy growing environment.

500

If germination is low, what is 1 possible cause?

Old seeds, dry out, incorrect pH

500

Given a base TDS of 56, what is the target TDS?

756

500

Why is weighing and counting harvests important?

Helps track yield and ensures cafeteria supply.

500

Could hydroponics replace soil farming in the future?

Debatable: Pros - efficient, sustainable

Cons: cost, energy use

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