The question is not "buy or build?". The real question is: what do you actually want to control — and what are you willing to invest for it? Budget, time and technical interest decide this. This article gives you the numbers to evaluate that yourself.
Overview: What Costs What?
| Category | Ready-made (small, 60×60 cm) | Ready-made (large, 120×120 cm) | DIY Build (40×40 cm, compact) | DIY Build (80×80 cm, full) |
|---|---|---|---|---|
| Housing | 80–180 € (tent) | 150–350 € (tent) | 30–80 € (MDF, alu profile) | 80–200 € (MDF, alu, coated) |
| Light | 80–220 € (budget LED) | 200–600 € (Samsung board) | 60–180 € (DIY board or budget LED) | 150–350 € (Samsung board, self-built) |
| Exhaust | 60–120 € (combo set) | 120–250 € (combo set) | 40–90 € (fan + filter separately) | 80–160 € (fan + filter + PWM) |
| Circulation | 20–50 € (clip fan) | 30–80 € (clip fan) | 15–40 € (120mm PC fan) | 30–70 € (2–3 × 120mm, controlled) |
| Irrigation | 0 (manual) | 0 (manual) | 0–30 € (timer) | 80–200 € (pumps + load cell + controller) |
| Control / OS | 0 (none) | 0–80 € (simple timer) | 0–30 € (outlet timer) | 60–180 € (Raspberry Pi + sensors) |
| Total | 255–600 € | 515–1310 € | 155–445 € | 480–1250 € |
Decision Matrix — Who Should Choose What?
| Profile | Recommendation | Reason |
|---|---|---|
| First grow, no technical background, budget < 300 € | Ready-made (compact) | Quick to start, limited error surface, no planning required |
| Second grow, basic understanding, budget 300–600 € | DIY compact (tent + individual components) | Better component quality, same entry barrier, more control |
| Technical interest, time available, budget 600–1200 € | Full DIY build (custom enclosure + Raspberry Pi) | Maximum control, best component quality, documented system |
| Technical interest, wants immediate results without architecture planning | Growix Core build guide | 40-part system with STL files, Python OS, documented assembly |
What Ready-Made Systems Don't Deliver
- Real monitoring: No data access, no trend logs, no deviation alerts
- Automated irrigation: Nearly all entry systems rely on manual watering
- Scalability: Extensions require buying new hardware, not modifying existing
- Repairability: Proprietary components depend on manufacturer availability
What DIY Builds Don't Deliver
- Immediate start: A full DIY build requires planning, sourcing and assembly time
- Warranty and certification: Custom builds have no CE certification
- Out-of-the-box documentation: Except for structured builds like Growix, no central documentation exists
Bottom line: Most growers who want serious control start with a ready-made system and switch to DIY on their second or third grow. That is not a mistake — it is the typical learning path. Those who know from the start that they want data and control skip that step and build directly.