AnyponicsSystems · By space
A hydroponic system for an apartment
An apartment system has three constraints a house doesn't: floor space, water risk and noise. The answer is usually a small DWC tote or a microgreens rack on a 2×4 ft shelf, with a 200W LED on a timer. It adds about $18 a month to the power bill.
What fits on a shelf
| Setup | System | Plants | Build cost | Running /mo | Harvest /mo | Payback |
|---|---|---|---|---|---|---|
| 2×3 ft counter: herbs | DWC | 8 | $621 | $21 | 1 lb | never |
| 2×4 ft shelf: greens & herbs | DWC | 16 | $634 | $22 | 14 heads (4.6 lb) | never |
| 2×4 ft rack: microgreens | Microgreens Tray | 5 | $784 | $38 | 13 trays (6.3 lb) | 10 months |
Microgreens are the standout for apartments: no pump, no plumbing, no reservoir to spill, and a 12-day cycle. They are also the highest-value crop per square foot, which is why that row pays back in 10 months at conservative prices.
Apartment-specific details
- Leaks. Put the whole system in a drip tray, never fill a reservoir to the brim, and plug the pump into a GFCI outlet or GFCI adapter. Your downstairs neighbour will thank you.
- Noise. Air pumps hum. Stand one on foam, or choose NFT, which only needs the water pump. Microgreens are silent.
- Light spill. A full-spectrum LED is bright and pinkish-white. A reflective grow tent or a cabinet keeps it out of the living room.
- Humidity. Small enclosed spaces trap moisture; a clip-on fan and a little ventilation prevent mould on walls and windows.
- Weight. Water weighs 8.3 lb per gallon. A 10-gallon tote is over 80 lb; put it on the floor or a rated shelf.
Can a window replace the grow light?
Only partly. Even a bright south window gives lettuce a fraction of the light it needs in winter, and plants lean and stretch. Herbs on a sunny sill work in summer. For year-round harvests indoors, budget for the light: it's the biggest part cost and about 90% of the electricity.