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AC Infinity 3x3 Grow Tent

A 3x3 (36 inch by 36 inch) footprint fits 2 to 3 plants at standard spacing. Recommended PAR is 240 to 280W of full-spectrum LED. Ventilation pairs with a 4-inch or 6-inch inline fan moving 150 to 250 CFM through a matching carbon filter. Ceiling clearance for a 6-foot-8-inch Cloudlab 733 plus 12 inches of light hood plus 12 inches of inline fan adds to roughly 8 feet 6 inches of vertical room space. The core build decision is tent-only Cloudlab 733 vs complete Advance 3-plant kit, which drives both cost and assembly time.

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Buyer's Guide

AC Infinity 3x3 Grow Tent: Complete Guide

What Fits in a 3x3 AC Infinity Build

The 3x3 footprint sits between the 2x4 and the 4x4 in capacity, comfortably running 2-3 plants in a corner that's easier to access than the wider 4x4. The AC Infinity 3x3 lineup comes in three SKU choices: tent-only Cloudlab 733, tent plus ventilation kit, or the complete Advance 3-plant kit with light and controller bundled.

SKU Choice: Tent-Only vs Complete Kit

Build Type SKU Includes Best For
Tent only Cloudlab 733 Tent + steel frame + observation window Build with existing gear
Tent + ventilation 3x3 Ventilation Kit Tent + Cloudline fan + carbon filter + ducting Bring your own LED
Complete Advance kit Advance 3-Plant Kit Tent + Ionboard LED + Cloudline fan + carbon filter + Smart Controller Closed-loop turnkey

Spec Targets for a 3x3

For a 2-3 plant 3x3 grow, target 240-280W of full-spectrum LED at 12-15 inches hang distance. A 4-inch or 6-inch Cloudline at 40-50 percent duty cycle delivers the airflow this footprint needs without overcooling. I'd default to the 6-inch fan path for most 3x3 builds because the larger duct keeps fan speed lower for the same CFM, which means quieter operation and longer carbon filter life.

For comparison of plant counts and density across footprints, see the plant-count guide.

Related Guides

For cross-brand 3x3 comparisons, the broader 3x3 grow tents page lines up the Cloudlab 733 against Spider Farmer, Mars Hydro, and Gorilla Grow Tent. The wider AC Infinity grow tent lineup covers every size from 2x2 up to 10x10.

Frequently Asked Questions

How many plants fit in a 3x3 tent?
2-3 plants at standard 18-inch spacing, or 1 large plant under heavy screen-of-green training. Three is the kit-supported count for the Advance 3-plant kit, giving each plant roughly 1x1 of personal canopy with shared edge space.
What size LED for a 3x3 AC Infinity tent?
240-280W full-spectrum LED covers the 3x3 canopy. The Ionboard S24 at 200W works for veg and gentle flowering; the Ionframe EVO3 at 280W is the better pick for aggressive flowering and commercial-quality yields.
Cloudlab 733 vs Advance 3-plant kit, what's the difference?
The Cloudlab 733 is the tent on its own. The Advance 3-Plant Kit ships the same tent plus an Ionboard LED, Cloudline fan, carbon filter, ducting, and Smart Controller. Pick the kit for a closed-loop turnkey setup; pick the tent-only if you're bringing your own LED and controller.
What CFM fan do I need for a 3x3?
A 4-inch Cloudline at 205 CFM or a 6-inch at 402 CFM both work for a 3x3. The 6-inch fan running at lower duty cycle (40 percent) is quieter than the 4-inch at higher duty cycle for the same actual airflow, so I'd default to the 6-inch for noise-sensitive setups.
Is a 4" or 6" Cloudline better for a 3x3?
The 6-inch is the better pick if your budget allows. Larger duct = lower fan speed for the same CFM = less noise + less filter restriction. The 4-inch saves cost and space but runs higher RPM at the same throughput, which shows up in noise and shorter carbon filter life.
Can I run a 3x3 with a 4" carbon filter?
Yes, paired with a 4-inch Cloudline. The 4-inch carbon filter handles odor for a 2-3 plant 3x3 grow comfortably, with the standard Premium tier lasting 12-18 months under moderate use. Step up to the 4-inch XL if the tent runs heavy odor loads or you want to stretch service life.
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