Tarantula Torch 850w by Grand Master LED – Adjustable Spectrum LED Grow Light
GT‑TT850‑GMLED
- Free shipping on orders over $499
Pairs well with
Light Up Like You Mean It
💬 Want a light that works as hard as you do? The Tarantula Torch 850 packs serious punch: hybrid channels (HPS / MH) + colour‑tunable LED sails = grown‑up control for flowering and veg. Whether you’re stacking tiers, pushing yield, or dialling in perfection, this beast has you covered.
🔹 Key Features
🔥 Hybrid Spectrum Duel‑Channel – Two channels (HPS/red & MH/blue) so you get that classic red‑heavy flower and crisp blue veg, or both for full power.
⚙️ Adjustable & Preset Spectrums – 12 presets in the manual, plus knob dimming, to overlay exact light recipes.
💦 Built Tough – IP66 waterproof, folding design for fast setup, Inventronics driver, five year warranty.
🛠️ How to Use It
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Mount it 12‑30 inches above the canopy depending on the wattage/use‑case.
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Use the MH channel for vegetative growth: cooler, bluer light helps bushy growth.
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Switch to HPS or both channels for flowering: red spectrum = better bud, deeper calyx, etc.
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Use the presets to experiment with spectrums, then tweak with the knob dimmer for fine control.
🌟 Grow Guys Tips
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If your tent or room heats up, run mostly blue spectrum + lower power, then ramp up red as you manage temp.
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When stacking vertically, run them lower (but safe) and use spectrum that favours flower - full‑red plus a touch of blue for structure.
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Use more blue towards the end of flower - this sneaky trick can help boost trichome production and tighten up terp profiles.
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Clean the diodes/fixture surface regularly - even a little dust cuts PPF output more than you think.
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🧃 Perfect For
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Larger commercial operations or medical gardens needing consistent, high output.
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Vertical farms or grow rooms with tiered racks.
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Growers who want full spectrum control AND high PPF per watt.
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Anyone chasing a serious flowering footprint without switching lights between veg & bloom.
📦 Specs & Stuff
| Parameter | Value |
|---|---|
| Max wattage | 850 W |
| System efficacy (Channel 1 / 750 W) | PPF ≈ 1,832 µmol/s / efficacy ≈ 2.51 µmol/J |
| Channel 2 (100 W) | PPF ≈ 302 µmol/s / efficacy ≈ 2.52 µmol/J |
| Total output both channels | ~2,134 µmol/s |
| Flowering footprint | ~4′ x 4′ (≈ 1.2m × 1.2m) |
| Dimensions | 1114 × 1109 × 92.5 mm |
| Weight | ~12.35 kg |
| Voltage range | 120‑277V |
| Amperage | 7.4A @ 120V / 3.8A @ 240V / 3.3A @ 277V |
| Certifications / Protection | IP66, Inventronics driver, 5‑year warranty |
🚀 Let It Shine - Add It to Cart
You deserve a light that doesn’t disappoint. Chuck the Tarantula Torch 850 in your cart and watch your grow room glow.