How Many Grow Lights Do I Need for 8x8 Grow Tent? 2021 Update
Grow up to 24 medium to large plants or 30 smaller plants in our 8x8 ft grow tent. These monstrous grow tents will require a spare room or garage to be set-up in due to their large size. The 8x8 footprint of this these tents will need about four or so 600 watt or equivalent grow lights to fully cover the space. These easy-to-assemble grow tents are great for managing the growing environment, maintains any mess created from the grow process, and helps keep your plants free of any outside pests or contaminants from outside.
Watts per square foot
To grow marijuana, you want between 30 and 40 watts per square foot of grow space. Of course, more wattage will give you larger yields (within reason) and less wattage will result in smaller yields.
NOTE: We are using the actual power here not the rated power. LED diodes are never run at full power, as this would considerably shorten their life. A 3-watt chip for example, will only run at approximately 60% of full power.
So if a fixture has two hundred 3-watt diodes, it is technically capable of producing 600 watts of power, but it will actually only draw about 300 to 400. Most amazon product will list the rated power (600 watts), but this is obviously a bit misleading.
Total power needed=grow area in sq ft*30W sq ft (to 40W/sq ft)
So For 8*8 area (64sq ft)
64sq ft*30W sq ft =1920watts
64 sq ft*40W sq ft =2560watts
So, continuing the example from above, 8*8 grow tent need between 1920 and 2560 watts of actual LED power
The Optimal PPF for Cannabis:
PPFD is a density measurement which is expressed as micromoles per square meter. To convert PPFD into a quantity measurement, we multiply it by the area in square meters. Since the optimal average photon density is 700 µmol/m2 (PPFD), the optimal number of photons is 700 µmol Usable PPF per square meter. This converts to 65 µmol Usable PPF per Square Foot. To calculate the total amount of light that you need for your grow space in Usable PPF, simply multiply the square footage by 65 (Sq. ft x 65 = µmol Usable PPF).
So 8*8ft grow tent need 4160 µmol PPF
8x8 Grow Tent need 4PCS 600W LED grow light or 2PCS 1000W LED grow light!
ECO Farm ECOF LM301B 600W 8 Bars LED Grow Light
LUMATEK ZEUS 600W LED GROW LIGHT
The higher specification Lumatek Zeus 600W Pro LED is a linear multi-light bar fixture producing high PPF of 1620 µmol/s and a Photon Efficacy (fixture efficiency) of 2.7 µmol/J.
With the advances in technology and fixture performance, high quality LED horticultural lighting is now a credible option offering significant return on investment to cultivators. Lumatek full spectrum horticultural LED solutions balance light quality (spectra) with light quantity (intensity and duration) sufficient to provide single-source lighting for entire grow cycle from vegetative through flowering period.
The array of LEDs create a uniform spread of light at short distance to the crop enabling single source grow lighting for multi-layer cultivation systems, single benches in low rooms and grow tents.
The Zeus is built using high quality Lumatek drivers and top bin LEDs from LUMLED and Osram generating a full-spectrum light source ideal for veg and flowering cycles.
Features:
? Very high efficacy 2.7 µmol/s/J
? High PPF output for high intensity 1620 µmol/s
? High quality Lumatek LED drivers
? Top bin LEDs
? Balanced full spectrum
? External control with Lumatek Control Panel
? Replaceable 100W magnet light bars
? Fully Dimmable
? User friendly Plug & Play Assembling
? Detachable driver for remote use
B.Lite Premium 1700e Full Spectrum LED Grow Light Fixture
The B-Lite Premium 1700e Full Spectrum LED grow light is the trusted brand of both beginners and experts in indoor gardening.
With up to 660 watts of power, the B-Lite 1700e can cover your canopy with much-needed light to stimulate growth.
Using only premium quality Samsung diodes, the B-Lite 1700e has an efficacy of 2.7 umol per joule for better crop yield than traditional HID lamps.
The B-Lite 1700e covers a full spectrum, so you don’t need to swap out grow lights during growth.
FEATURES
Dimmable Settings (200W / 350W / 450W / 660W)
Advanced Dimmable feature with Use of External B-Lite Master Zone Controller (1W - 660W)
Automatic Frequency Adjustment
TECHNICAL SPECIFICATIONS
Input Voltage: 100V - 277VAC
Input Power: 660W
Power Factor: 120VAC Full Load =90%
PPF: 1700 µmol/s
Efficacy: 2.7 µmol/J
Thermal Management: Passive
Operation Temperature: 0 - 35?
Color Rendering Index: Ra90
Chip: SAMSUNG
Light Source: LED
Dimensions: 1184 x 1119 x 79mm
Packaging: 1250 x 690 x 170mm
PACKAGE CONTENTS
660W LED Fixture
Power Cable
RJ14 Connection Kit
Specifications Manual
