4x8 Grow Tents & Complete 4x8 Grow Tent Kits
The 4x8 grow tent doubles the canopy space of a 4x4 with a two-fixture lighting configuration -- 32 sq ft of growing footprint that accommodates 12-16 medium plants, 8-10 large plants with full canopy training, or a continuous two-stage perpetual harvest with vegetative plants on one half and flowering plants on the other under separate light schedules. The 4x8 is the most popular tent size step-up for growers who have outgrown a single 4x4 setup and want to increase production without moving to a full dedicated room.
Equipment Requirements for a 4x8 Tent
A 4x8 tent requires two LED fixtures to achieve productive flowering PPFD across the full canopy. Two 600-700W LED bar arrays (one per 4x4 half) provide 900-1,100 umol/m2/s across the full 4x8 footprint -- the standard configuration for serious flowering production. Alternatively, two 400-500W fixtures running at higher efficiency provide adequate vegetative PPFD at lower running cost for veg-only or light-cycle-sensitive stages. Ventilation: a 4x8x7 ft tent (224 cu ft) requires an inline fan rated at 280-300+ CFM through a carbon filter -- a 6-inch inline fan is the standard match. Use our Ventilation & Carbon Filter Sizing Calculator to confirm CFM for your specific tent height and equipment configuration.
Perpetual Harvest Setup in a 4x8 Tent
The 4x8 tent's elongated format makes it particularly well-suited to a continuous harvest setup: divide the tent into two 4x4 zones with a light-proof partition, run one zone on a vegetative light schedule and the other on a flowering schedule simultaneously. While one side is harvested, the other side's plants move over, and a new batch of seedlings or clones starts in the vacated vegetative space. This perpetual harvest approach eliminates the full dark period between harvests, providing a continuous production cycle from a single tent footprint. Internal partitions (panda film dividers, Gorilla Grow Tent divider kits, or multi-chamber tent models) make this possible without separate tent infrastructure.
4x8 Grow Tent Brands: Gorilla, Covert & AC Infinity
Hydrobuilder carries 4x8 grow tents from Gorilla Grow Tent (Heavy Duty 1680D and Lite Line 210D), Covert, and AC Infinity. The Gorilla Heavy Duty 4x8 includes the height extension option (adding 1-2 ft of clearance above the standard tent height), 300 lb rated cross-bar pole system, and eight or more cross-bar mounting points for hanging two full lighting fixtures plus climate equipment. AC Infinity's 4x8 model features excellent port placement and build quality at a mid-range price point. Covert's 4x8 provides strong value for growers who want reliable construction without the premium canvas cost. Read our updated Grow Tent Buying Guide for a complete brand and feature comparison. Complete your 4x8 setup with a grow room dehumidifier sized for the expanded canopy and an environment controller to automate temperature and humidity across both zones. Fast shipping.
4x8 Grow Tent FAQ
How many plants fit in a 4x8 grow tent?
A 4x8 tent (32 sq ft) accommodates: 32 plants in 1-gallon sea-of-green containers, 16 plants in 3-gallon containers, 10-12 plants in 5-gallon containers with moderate training, or 6-8 plants in 7-gallon+ containers with full SCROG or LST canopy development. For a perpetual harvest split-zone setup, plan 8-12 plants total across both zones at any given time, with different growth stages on each side.
How many lights do I need for a 4x8 tent?
Two LED fixtures are the standard configuration for a flowering 4x8 tent -- one fixture per 4x4 half. Two 600-700W LED bar arrays provide 900-1,100+ umol/m2/s PPFD across the full 32 sq ft canopy. Alternatively, two 400-500W fixtures deliver adequate PPFD for vegetative growth and early flowering at lower running cost. A single 1000W+ fixture positioned centrally can cover a 4x8 canopy but produces lower PPFD at the corners and edges of the long dimension -- two matched fixtures provide significantly better canopy uniformity for a rectangular footprint.
What inline fan do I need for a 4x8 tent?
A 4x8x7 ft tent (224 cu ft volume) requires a fan rated at 280+ CFM through a carbon filter. Adding 25-30% for filter resistance means selecting a fan with a free-air rating of approximately 350-400 CFM or higher -- a 6-inch inline fan from Can-Fan, AC Infinity, or similar brands in this CFM class is the standard match. For tents taller than 7 ft (with height extensions), recalculate volume and adjust fan sizing accordingly. Use our Ventilation Calculator for a precise recommendation.
