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Looking for the best UK grow room setups in 2025? Whether you want fresh herbs, salad greens, or to maximise yields with a professional hydroponic setup, a grow room is the backbone of success. In this guide, we’ll cover the best grow room setups, grow tents, grow lights, and hydroponic systems available in 2025.
Why Set Up a Grow Room?
A grow room gives you complete control over your indoor growing environment — light, temperature, airflow, and humidity. Unlike placing a few plants on a windowsill, a dedicated grow room (or tent) ensures:
- Year-round harvests, regardless of weather.
- Optimised lighting with LED grow lights.
- Improved airflow with built-in fans and filters.
- Space efficiency, even in smaller UK homes.
Grow Rooms vs Grow Tents
Many UK growers use the term grow room when they actually mean a grow tent. Here’s the difference:
- Grow Room → A larger dedicated space, often a spare room or outbuilding, fitted with lights and hydroponic systems.
- Grow Tent → A pre-made reflective enclosure, perfect for beginners or small-scale growers. Easy to set up and dismantle.
If you don’t want to convert an entire room, a grow tent kit is the most practical entry point.
Essential Grow Room Equipment
A complete grow room setup usually includes:
- Grow Tent (or dedicated space) – Lightproof and reflective.
- LED Grow Lights – Energy-efficient, full-spectrum lighting.
- Ventilation System – Fans and carbon filters for airflow.
- Hydroponic System or Pots – For growing in water or soil.
- Environmental Controls – Thermometer, timer, and humidity monitor.
Who Needs a High‑End Grow Room or Tent Kit?
Basic grow lights are fine for a few herbs on a windowsill. But if you want:
- Year‑round fruiting crops like tomatoes, peppers or aubergines
- Tropical plants that demand stable warmth and humidity
- Microgreens or cut herbs in larger quantities
- Professional‑grade propagation for seedlings
…then a complete high‑end grow room / grow tent kit gives you a climate‑controlled indoor garden, ready to go straight out of the box.
What’s Included in a “Complete” Kit
Most premium kits bundle everything you need:
- Grow Tent — durable steel frame, reflective Mylar lining, multiple vents.
- LED Grow Light — full spectrum, high PPFD, dimmable driver.
- Inline Fan + Carbon Filter — moves hot, stale air out; filter optional for food crops but included in most kits.
- Ducting & Clamps — for easy airflow setup.
- Circulation Fans — clip‑on or oscillating to strengthen stems.
- Timers & Controllers — from simple timers to full environmental controllers for temperature and humidity.
How to Choose — 6 Must‑Check Specs
- Tent size — matches the space you have and what you want to grow.
- LED wattage & PPFD — higher power for fruiting crops; dimmable for seedlings.
- Fan efficiency — EC fans cost less to run than older AC fans.
- Filter quality — useful for odour, dust, or urban environments.
- Build quality — steel poles, strong zippers, double‑stitched seams.
- Controller compatibility — smart plugs, timers, or full digital control systems.
Best UK Grow Room Kits & Tent Setups in 2025
Below are complete kits that combine premium tents, strong LED lighting, and full ventilation setups. They’re priced higher than entry‑level options — but they’re designed to last and deliver consistent indoor harvests.
1) Low-End Option: VIVOSUN Grow Tent (80×80×160 cm)
LED: Not included — designed to pair with a basic 100–150W LED grow light (e.g. VIVOSUN VS1500)
Tent: 80×80×160 cm, 600D Oxford fabric with highly reflective Mylar lining, viewing window + removable base tray
Fan & Filter: Not included — works with a 4″ inline fan kit for simple ventilation
Extras: Easy-access zippers, tool bag, strong steel frame, multiple vent ports for customisation
Best for: Beginners starting small with herbs, peppers, or 1–2 tomato plants indoors
Price band: ~£120
Buy: Check price on Amazon UK
2) Mid-Range Option: Mars Hydro TSW 2000W Grow Tent Kit (120×120×200 cm)
LED: TSW 2000W, full-spectrum dimmable LED with high efficiency for veg + flowering
Tent: 120×120×200 cm, 1680D canvas with reflective Mylar interior, sturdy steel poles
Fan & Filter: 6″ inline fan + carbon filter kit with ducting and clamps
Extras: Rope hangers, thermometer/hygrometer, timer, scissors, grow bags, trellis netting
Best for: Growers ready to move beyond entry-level setups and produce steady harvests of tomatoes, peppers, or herbs
Price band: ~£500–£600
Buy: Check price on Amazon UK
3) Premium Option: AC Infinity Advance Grow System PRO (150×150×200 cm)
LED: LM301H EVO full-spectrum LED with advanced dimming + WiFi app control
Tent: 150×150×200 cm, ultra-durable 2000D Mylar with reinforced steel frame
Fan & Filter: Dynamic ventilation system with inline EC fan, carbon filter, and circulation fans included
Extras: WiFi climate monitoring + control, rope hangers, integrated tool pockets, premium build quality
Best for: Serious indoor growers who want pro-level efficiency, automation, and year-round harvests
Price band: ~£1,600
Buy: Check price on Amazon UK
4) Professional Option: Secret Jardin Intense Large Grow Tent (600×360×242 cm)
LED: Not included — designed for pairing with multiple high-power LED or HPS systems
Tent: 600×360×242 cm, heavy-duty modular build with reinforced poles and multiple access windows
Fan & Filter: Not included — best used with dual 8″–10″ EC fans + carbon filters for full-room airflow
Extras: Expandable frame, dual doors, tool pockets, modular add-ons for scalability
Best for: Semi-professional or commercial growers converting an outbuilding or full room into a grow space
Price band: £1,800+
Buy: Check price on Amazon UK
Best UK Grow Room Comparison Table (2025)
| Option | Product | Tent Size | LED Included | Fan & Filter | Best For | Price Band |
|---|---|---|---|---|---|---|
| Low-End | VIVOSUN Grow Tent | 80×80×160 cm | Not included (pairs with 100–150W LED) | Not included (works with 4″ kit) | Beginners, herbs, 1–2 tomato plants | ~£120 |
| Mid-Range | Mars Hydro TSW 2000W Kit | 120×120×200 cm | TSW 2000W full spectrum, dimmable | 6″ inline fan + carbon filter | Hobby growers, peppers, tomatoes | £500–£600 |
| Premium | AC Infinity Advance Grow System PRO | 150×150×200 cm | LM301H EVO full-spectrum LED + WiFi control | Dynamic EC ventilation + carbon filter | Serious hobbyists, automated growing | ~£1,600 |
| Professional | Secret Jardin Intense | 600×360×242 cm | Not included (supports multiple LEDs/HPS) | Not included (dual 8″–10″ EC fans recommended) | Semi-pro/commercial full-room grow spaces | £1,800+ |
👉 Still shopping around? Browse all complete grow tent kits on Amazon UK to compare more sizes, brands, and prices.
Running Costs & Energy Efficiency (Typical UK rates)
- Lights: 400–650 W LEDs, ~£1.30–£2.50/day (at £0.28/kWh, 16 hrs).
- Fans: 25–45 W total, ~£0.10–£0.30/day.
- Estimated total: ~£40–£70/month depending on kit size and runtime.
👉 For smaller herbs/greens, dim lights or reduce hours. For fruiting crops, budget for full power.
Based on current UK electricity rates (source: Ofgem), a 600W LED grow light running 16 hours a day costs around £50–60/month.
Setup Tips to Avoid Overkill
- Skip the carbon filter if you’re only growing herbs/vegetables (saves fan resistance).
- Run EC fans on lower speed — they’re quieter and cheaper to run.
- Use timers/smart plugs to reduce fan runtime instead of 24/7.
- Leave vents cracked instead of unzipping the entire tent — you keep reflectivity and environmental control.
Grow Lights: The Heart of Your Grow Room
Even if you’re starting small, grow lights are non-negotiable. The best LED grow lights in 2025 offer:
- Full spectrum light for every growth stage.
- Low energy consumption.
- Long lifespan (50,000+ hours).
Pairing the right grow light with your tent or hydroponic system makes the biggest difference to yields.
Hydroponics vs Soil in a Grow Room
If you’re undecided between hydroponics and soil:
- Hydroponics → Faster growth, higher yields, but more upfront setup cost.
- Soil → Lower cost, easier for beginners, but less efficient long-term.
Many UK growers start with soil in a grow tent, then upgrade to a hydroponic system once they gain experience.
Final Thoughts
If you want to grow fresh food indoors in the UK, investing in a grow room setup is the smartest move. Start small with a grow tent kit, add quality LED grow lights, and expand into hydroponics when you’re ready. By tailoring your grow room to your space and budget, you’ll enjoy consistent harvests year-round.
Looking for cheaper options to start off your indoor growing? Check out our guide to the Best Indoor Grow Lights For Beginners. If you need help with setting them up, we’ve also covered How to Set Up Grow Lights Indoors. Finally, if you prefer ready-made shelves, see our list of the Top 10 Grow Light. Stand Systems.
Looking for more self-sufficiency and gardening guides? Visit HomeGrower to explore all our latest indoor and outdoor growing tips.
What equipment do I need to set up a grow room in the UK?
A basic grow room needs a tent or enclosed space, LED grow light, extraction fan, carbon filter, timer, thermometer/hygrometer, and pots or trays for plants. Optional extras include a dehumidifier and oscillating fans.
What size grow room is best for beginners?
A 1.2 × 1.2 m (4×4 ft) tent is ideal for most beginners — it’s large enough for several plants but still easy to control light, temperature, and humidity.
Do I need ventilation in a small grow room?
Yes. Even small grow rooms need airflow to prevent heat build-up and mould. An inline fan and carbon filter work together to remove stale air while drawing in fresh air.
What’s the best temperature and humidity for indoor growing?
Aim for 22–26 °C during lights-on and around 18 °C at night. Humidity should be about 60 % for seedlings, 50 % for vegetative growth, and 40–45 % for flowering.
How much power do I need for my grow lights?
A general rule is 30–40 W per square foot of canopy for LED lighting. Modern full-spectrum LEDs are energy-efficient, so check your fixture’s PPFD coverage to match your tent size.
Should I use a grow tent or build my own room?
Grow tents are easier for most UK growers — they’re lightproof, have pre-made ports for fans, and keep humidity under control. A DIY room gives more flexibility but takes more time and effort.
How do I reduce noise from fans in my grow room?
Use insulated ducting, rubber mounts, and a speed controller to keep fan noise down. Acoustic box fans are also quieter than standard inline models.
Do LED grow lights produce less heat than HPS?
Yes — LEDs give off far less heat than HPS lamps, making them safer for small indoor spaces and reducing the need for heavy ventilation.
How can I control smell from my grow room?
A carbon filter is the most effective way to neutralise odours. Replace filters roughly once a year, depending on humidity and usage.
Can I automate my grow room setup?
Yes. Smart timers, Wi-Fi plugs, and environmental controllers let you automate lighting schedules, fans, and humidity levels for consistent results.