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AC Infinity Cloudforge Humidifiers

AC Infinity Cloudforge humidifiers come in three sizes: the T3 (4.5L for 2x2 to 3x3 tents), the T5 (6L environmental for 4x4 to 5x5), and the T7 (15L for grow rooms or 6x6 and larger). Each unit uses ultrasonic cold mist with an atomizing nozzle, so there's no warm-up cycle and the output stays cool to the touch. The Cloudforge pairs with a Smart Controller 69 Pro Plus or Controller AI+ over UIS, running closed-loop humidity control off the controller's sensor probe. All three models have auto-shutoff at empty and support distilled water for residue-free mist. Tank size and target tent footprint drive the model decision.

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Buyer's Guide

AC Infinity Cloudforge Humidifiers: Complete Guide

Cloudforge Sizing by Tent Footprint

The AC Infinity Cloudforge series replaces the consumer-grade plug-in humidifier with a UIS-compatible plant humidifier that integrates into the Smart Controller closed loop. Three models cover the common tent sizes, and the choice comes down to tank capacity (how often you want to refill) and target tent footprint (how much output the room needs).

Cloudforge Model Reference

Model Tank Size Coverage Refill Frequency
Cloudforge T3 4.5L 2x2 to 3x3 2-3 days
Cloudforge T5 6L 4x4 to 5x5 2 days
Cloudforge T7 15L 6x6+ or small grow room 4-5 days

Closed-Loop Humidity Control

The Cloudforge connects to a Smart Controller 69 Pro Plus or Controller AI+ over UIS. Once paired, the controller's sensor probe reads tent humidity and turns the Cloudforge on and off automatically to hit the target setpoint. Veg humidity typically targets 60-70 percent RH; flowering runs 40-50 percent. The closed-loop system makes the difference between a fixed plug-in humidifier that runs on a timer and a humidifier that actually responds to room conditions.

For a deeper walkthrough on what humidity range to target by growth stage and how to dial in the closed loop, see the humidity control guide.

Related Guides

For cross-brand humidifier options including Quest, Vornado, and Honeywell, the broader humidifiers page lines up the alternatives. For dehumidification on the opposite side of the climate loop, see the grow room dehumidifiers lineup.

Frequently Asked Questions

Which Cloudforge for a 4x4 tent?
The Cloudforge T5 at 6L is the right size for a 4x4. It carries enough water for roughly 2 days of refilling and has the output range to lift a 4x4 from 30 percent ambient up to a 60-70 percent veg target. The T3 works for shorter veg cycles but tops out at 3x3 footprints; the T7 is overkill for a single 4x4 and better suited to grow rooms.
Does the Cloudforge work without a Smart Controller?
Yes, every Cloudforge has on-unit dial controls and an internal sensor for standalone operation. You set the target RH on the unit and it runs to that setpoint. Pairing with a Smart Controller adds remote scheduling, app-based monitoring, and synchronization with the inline fan and LED so the whole climate loop responds together.
How often do I refill the T5?
In a 4x4 running 60-70 percent RH during veg, the 6L tank lasts about 2 days. Output rate scales with how dry the ambient room is. A basement growing in winter pulls more output to lift RH; a humid summer environment needs less and stretches the refill window to 3-4 days.
Can I use tap water in the Cloudforge?
Tap water works, but it leaves mineral residue on plants and inside the unit over time. Hard water also clogs the atomizing nozzle. Distilled or RO water is the better choice if available; the trade-off is the cost and storage space for jugs. For mid-volume builds, a small RO filter inline with the refill jug is the long-term solution.
Does the Cloudforge auto-shutoff?
Yes, all three Cloudforge models shut off automatically when the tank runs dry. The controller also sends a low-water alert to the AC Infinity app if paired with a 69 Pro Plus or Controller AI+ over UIS.
T5 vs T7, when do I need the bigger tank?
Step up to the T7 when the footprint is 6x6 or larger, when humidifying an open grow room rather than a sealed tent, or when refill frequency on the T5 (every 2 days) becomes a chore. The 15L tank on the T7 stretches refills to 4-5 days at typical 4x4 humidity targets, which matters for low-touch grows or vacation periods.
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