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Grand Master - Tarantula Tent Ultimate Grow Light LED - 4x4 is backordered and will ship as soon as it is back in stock.
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Grand Master - Tarantula Tent Ultimate Grow Light LED - 4x4 is backordered and will ship as soon as it is back in stock.
Grand Master LEDs Tarantula Tent Ultimate
Most tent lights sit well inside the tent walls, so the plants in the middle get the most light and the corners fall behind. The Tent Ultimate reaches almost wall to wall, packs its bars close together, and adds extra light along the edges, so the plants in the corners keep up with the ones in the center. It is the most even light we have found for a home grower running a 4x4 or 5x5, and it connects to the AC Infinity controller you may already own.
Even coverage
In a tent, the corners are where most lights come up short. Three design choices close that gap.
Nearly wall to wall
The fixture is built to the inside size of the tent, about 1.5 inches short of the walls on each side. Most lights stop much farther in.
Tight bar spacing
The bars sit close together and evenly spaced across the whole fixture, so there are no bright stripes and dark gaps across the canopy.
Extra light on the edges
Light falls off near the walls in any tent. The Tent Ultimate adds extra light along the outer edges to balance that out.
Build quality
We have worked with a lot of grow lights over the years. The Tent Ultimate has the best fit and finish of any of them, and it is not close, even next to the competitors selling today. You notice it the moment you open the box, and again when the light bars click into the frame with no fiddling.
It is also IP66 rated against dust and water spray and ETL Listed, and Grand Master backs it with a 5 year warranty.
Choose your size
Each size is built to fill one tent. Pick the one that matches yours.
Power cost assumes 12 hours a day at full power and $0.15 per kWh. Plug in your own rate with our free grow light cost calculator.
Specifications
| Spec | 4x4 | 5x5 |
|---|---|---|
| Diodes | LEDESTAR | LEDESTAR |
| Max wattage | 750 W | 1,000 W |
| Total output | 2,098 µmol/s | 2,820 µmol/s |
| System efficacy | 2.76 µmol/J | 2.82 µmol/J |
| Flowering footprint | 4 ft x 4 ft | 5 ft x 5 ft |
| Fixture size | 44.88 x 44.88 in | 56.7 x 56.7 in |
| Weight | 37.15 lb | 46.3 lb |
| Input voltage | 120 to 277 V | 120 to 277 V |
| Mounting height | 12 to 18 in above canopy | 12 to 18 in above canopy |
| Dimming | Knob, or AC Infinity controller with the Type-A lighting adapter | Knob, or AC Infinity controller with the Type-A lighting adapter |
| Power cord | 120 V standard, 240 V on request | 120 V standard, 240 V on request |
| Ratings | ETL Listed, IP66 | ETL Listed, IP66 |
| Warranty | 5 years | 5 years |
Efficacy is how much plant-usable light comes out per watt from the wall. At 2.76 µmol/J, every joule of electricity becomes 2.76 micromoles of light.
Setup
Click it together
The light bars click right into the frame bars, then it plugs in and is ready to run. One person can hang it, but it is safer with two. The manual for your size is linked in the documents section below.
Hang at 12 to 18 inches
Measure from the top of the canopy, not the soil. Raise the light as plants grow to hold that distance.
Set intensity
Use the knob, or connect it to your AC Infinity controller with AC Infinity's UIS Type-A lighting adapter (sold separately) to schedule and dim it with the rest of your tent. Start lower for young plants and turn it up as they establish.
Power use
Worked at full power and $0.15 per kWh. Dimmed, the light draws less. To run the numbers with your own electric rate and schedule, use our free grow light cost calculator.
| Schedule | 4x4 at 750 W | 5x5 at 1,000 W |
|---|---|---|
| Flower, 12 hours a day | 9.0 kWh a day, about $40.50 a month | 12.0 kWh a day, about $54.00 a month |
| Veg, 18 hours a day | 13.5 kWh a day, about $60.75 a month | 18.0 kWh a day, about $81.00 a month |
Fill the tent
A light this even rewards a full canopy. These kits are built to the same tent sizes.
Documents
Questions
Match the light to the tent. A 4x4 tent takes the 4x4 light and a 5x5 tent takes the 5x5. The 5x5 fixture is 56.7 inches wide and will not fit in a 48 inch tent.
Yes, if you run AC Infinity. Connect the light to your AC Infinity controller with AC Infinity's UIS Type-A lighting adapter, then schedule and dim it alongside your fans. The adapter is sold by AC Infinity and most grow stores. It also works with the Grand Master Controller.
Lights ship with a 120 V cord. If you need 240 V, tell us before you place your order and we will send it with a 240 V cord.
Request a 240 V cord12 to 18 inches above the top of the canopy. Use the knob to bring intensity down for seedlings and clones.
The fixture is rated IP66 for dust and water spray, so normal tent humidity and a stray splash while watering are not a problem.
Both sizes carry a 5 year warranty from Grand Master. Start with us and we will help you through it. The full warranty policy is linked in the documents section.
Yes. Send us the size and quantity and we will put together a quote.
Contact us for bulk pricingQuestions?
We are here to help and our entire staff knows how to grow. Just reach out via chat, email or even phone. We are passionate about growing and want you to succeed.
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Grand Master LEDs Tarantula Tent Ultimate
Most tent lights sit well inside the tent walls, so the plants in the middle get the most light and the corners fall behind. The Tent Ultimate reaches almost wall to wall, packs its bars close together, and adds extra light along the edges, so the plants in the corners keep up with the ones in the center. It is the most even light we have found for a home grower running a 4x4 or 5x5, and it connects to the AC Infinity controller you may already own.
Even coverage
In a tent, the corners are where most lights come up short. Three design choices close that gap.
Nearly wall to wall
The fixture is built to the inside size of the tent, about 1.5 inches short of the walls on each side. Most lights stop much farther in.
Tight bar spacing
The bars sit close together and evenly spaced across the whole fixture, so there are no bright stripes and dark gaps across the canopy.
Extra light on the edges
Light falls off near the walls in any tent. The Tent Ultimate adds extra light along the outer edges to balance that out.
Build quality
We have worked with a lot of grow lights over the years. The Tent Ultimate has the best fit and finish of any of them, and it is not close, even next to the competitors selling today. You notice it the moment you open the box, and again when the light bars click into the frame with no fiddling.
It is also IP66 rated against dust and water spray and ETL Listed, and Grand Master backs it with a 5 year warranty.
Choose your size
Each size is built to fill one tent. Pick the one that matches yours.
Power cost assumes 12 hours a day at full power and $0.15 per kWh. Plug in your own rate with our free grow light cost calculator.
Specifications
| Spec | 4x4 | 5x5 |
|---|---|---|
| Diodes | LEDESTAR | LEDESTAR |
| Max wattage | 750 W | 1,000 W |
| Total output | 2,098 µmol/s | 2,820 µmol/s |
| System efficacy | 2.76 µmol/J | 2.82 µmol/J |
| Flowering footprint | 4 ft x 4 ft | 5 ft x 5 ft |
| Fixture size | 44.88 x 44.88 in | 56.7 x 56.7 in |
| Weight | 37.15 lb | 46.3 lb |
| Input voltage | 120 to 277 V | 120 to 277 V |
| Mounting height | 12 to 18 in above canopy | 12 to 18 in above canopy |
| Dimming | Knob, or AC Infinity controller with the Type-A lighting adapter | Knob, or AC Infinity controller with the Type-A lighting adapter |
| Power cord | 120 V standard, 240 V on request | 120 V standard, 240 V on request |
| Ratings | ETL Listed, IP66 | ETL Listed, IP66 |
| Warranty | 5 years | 5 years |
Efficacy is how much plant-usable light comes out per watt from the wall. At 2.76 µmol/J, every joule of electricity becomes 2.76 micromoles of light.
Setup
Click it together
The light bars click right into the frame bars, then it plugs in and is ready to run. One person can hang it, but it is safer with two. The manual for your size is linked in the documents section below.
Hang at 12 to 18 inches
Measure from the top of the canopy, not the soil. Raise the light as plants grow to hold that distance.
Set intensity
Use the knob, or connect it to your AC Infinity controller with AC Infinity's UIS Type-A lighting adapter (sold separately) to schedule and dim it with the rest of your tent. Start lower for young plants and turn it up as they establish.
Power use
Worked at full power and $0.15 per kWh. Dimmed, the light draws less. To run the numbers with your own electric rate and schedule, use our free grow light cost calculator.
| Schedule | 4x4 at 750 W | 5x5 at 1,000 W |
|---|---|---|
| Flower, 12 hours a day | 9.0 kWh a day, about $40.50 a month | 12.0 kWh a day, about $54.00 a month |
| Veg, 18 hours a day | 13.5 kWh a day, about $60.75 a month | 18.0 kWh a day, about $81.00 a month |
Fill the tent
A light this even rewards a full canopy. These kits are built to the same tent sizes.
Documents
Questions
Match the light to the tent. A 4x4 tent takes the 4x4 light and a 5x5 tent takes the 5x5. The 5x5 fixture is 56.7 inches wide and will not fit in a 48 inch tent.
Yes, if you run AC Infinity. Connect the light to your AC Infinity controller with AC Infinity's UIS Type-A lighting adapter, then schedule and dim it alongside your fans. The adapter is sold by AC Infinity and most grow stores. It also works with the Grand Master Controller.
Lights ship with a 120 V cord. If you need 240 V, tell us before you place your order and we will send it with a 240 V cord.
Request a 240 V cord12 to 18 inches above the top of the canopy. Use the knob to bring intensity down for seedlings and clones.
The fixture is rated IP66 for dust and water spray, so normal tent humidity and a stray splash while watering are not a problem.
Both sizes carry a 5 year warranty from Grand Master. Start with us and we will help you through it. The full warranty policy is linked in the documents section.
Yes. Send us the size and quantity and we will put together a quote.
Contact us for bulk pricingSize
