The AutoPot 4Pot System is a complete, electricity-free, gravity-fed watering system that needs no power, pumps, mains water pressure, or timers — it feeds four plants from a single reservoir using the maker’s AQUAvalve5 float valve. The kit pairs four pots in a choice of 2.2 gal or 3.9 gal with a choice of reservoir. This page gives the maker’s published component list, sizes, and the wet-and-dry mechanism, and is honest about what AutoPot does not publish. It is a passive irrigation system, not a pump-driven drip kit or a nutrient.
What it is
The 4Pot System is AutoPot’s core four-pot self-watering kit, carrying the maker model code APWS001. Water and dissolved nutrient sit in a raised reservoir and gravity-feed each pot through an AQUAvalve5, which AutoPot describes as designed to allow the plant to go through a wet and dry cycle. The valve floods the tray, then shuts off and lets the tray dry down before refilling, so the roots alternate between drink and air without a timer. As shipped the system includes four 1Pot grommeted trays and lids, four pots, four AQUAvalve5 valves, four Root Control Squares, a filter kit, two 3/8 in Pro inline taps, and 13 ft of 3/8 in black pipe, plus a choice of reservoir. Fill the tank with water and liquid feed and, per the maker, all you need to do is remember to fill up your reservoir from time to time. Because the AQUAvalve meters water automatically, AutoPot says its systems can often be left unattended for weeks, delivering what each plant needs without manual intervention.
Specifications
| Maker model code | APWS001 |
|---|---|
| Pots | Four pots, each 3.9 gal (2.2 gal also offered; Black or White) |
| Valve | AQUAvalve5 (one per pot) |
| Filter | 3/8 in Golf Filter Kit, or a 1/2 in – 3/8 in Click Fit Tank Filter with FlexiTank orders |
| Pipe supplied | 13 ft of 3/8 in black pipe |
| Shipping weight | 18 lbs |
| Shipping dimensions | 17 × 17 × 26 in |
| Power required | None — gravity-fed, electricity-free |
Why choose it
- Runs on gravity, not power. AutoPot states the system needs no power, pumps, mains water pressure, or timers — just gravity from a reservoir, so there is no pump to fail and nothing to plug in.
- Automatic wet-and-dry cycle. The AQUAvalve5 only refills a tray once it has dried down, so each pot self-regulates rather than staying constantly wet.
- Right-sized for most tents. Each of the four pots holds 3.9 gal of substrate, a common four-plant footprint, with a 2.2 gal pot offered for tighter spacing.
- Modular and expandable. The maker notes the kit is easily extended so many pots can be linked to a single reservoir, and the pots and trays can be moved and re-spaced at will.
Best uses
- Indoor or outdoor four-plant grows. The maker positions the 4Pot System for a wide range of plant types and sizes, including seasonal flowering plants and perennial shrubs.
- Hands-off feeding. Because the reservoir does the work, the system suits growers who want to top up nutrient occasionally rather than water by hand daily.
- Power-free or off-grid spaces. With no pump or timer, it fits greenhouses, allotments, and rooms where running mains power to an irrigation controller is impractical.
- Scaling a grow over time. Because pots and trays link to one reservoir and can be re-spaced as plants grow, the same kit adapts as a garden expands rather than needing to be replaced.
Compatibility and media
The 4Pot System is a media-based system, not a bare-root water-culture setup — each pot is filled with substrate. AutoPot’s optional AirBase lets you skip a bottom drainage layer of clay pebbles, hydroton, or perlite, while the AirDome Kit adds oxygen for heavier substrate blends. The reservoir accepts standard water plus liquid feed; growers pair AutoPot systems with a General Hydroponics FloraSeries feeding program or dose from a Dosatron nutrient delivery system. Replacement and extension tubing such as FloraFlex 1/4 in OD tubing can supplement the black pipe supplied.
The reservoir is chosen separately: AutoPot offers the 4Pot System with a 12.4 gal hard tank, a 13 gal FlexiTank, a 25 gal FlexiTank, a 25 gal FlexiTank Pro, or no tank. A larger tank simply means longer intervals between refills. The system ships with a 3/8 in Golf Filter Kit, or a Click Fit tank filter when ordered with a FlexiTank, to keep debris out of the feed lines. Each of the four pots also ships with a Root Control Square to keep roots from growing down into the tray and interfering with the valve.
Comparison
| Attribute | AutoPot 4Pot System | Pump-fed drip kit |
|---|---|---|
| Power | None — gravity-fed | Mains pump + timer |
| Watering pattern | Self-regulating wet and dry cycle | Fixed timed intervals |
| Pot capacity | 3.9 gal per pot (four pots) | Varies |
| Moving parts in feed line | Float valve only | Pump, timer, emitters |
Where it fits
For other complete grow systems and water-management kits, browse the drip-irrigation kits category. Within the AutoPot range, related systems include:
- AutoPot 24 Pot System w/ FlexiTank Pro — the same AQUAvalve mechanism scaled to a larger grow.
- AutoPot 1Pot 2Pot System (3.9 gal) — a smaller two-pot kit for tighter spaces.
- Super Sprouter Root Rain Spray Cloner — propagation upstream of a grow system.
Frequently asked questions
Does it need electricity? No — the maker states it is electricity-free and gravity-fed, needing no power, pumps, or timers.
How big are the pots? Each of the four pots holds 3.9 gal (a 2.2 gal pot is also offered).
What valve does it use? The AQUAvalve5, one per pot, driving the wet-and-dry cycle.
Who this is for — and who should skip it
Suited: growers who want a power-free, gravity-fed way to water four pots from one reservoir with minimal daily attention, at a standard 3.9 gal pot size.
Not for / its limits: it is a passive, media-based system — not a bare-root deep-water-culture or aeroponic setup, and not a pump-pressurised drip network. It relies on a raised reservoir for gravity feed, and the reservoir is chosen separately (12.4 gal hard tank, 13 or 25 gal FlexiTank, or no tank). Growers needing larger 6.6 gal pots should look at the 4Pot XL instead.
HELD (not stated because not sourced this session): the pot and tray material composition; exact reservoir and pot dimensions; the filter micron ratings (this maker page lists the filter by name, not micron); any per-plant yield or water-saving figure; a maker SKU beyond the APWS model code; the warranty term (held per M-05); UV/shelf life of the plastics; and the live retail price (the storefront price field is the source of truth at deploy).
Ready to automate your watering? Add to cart, or talk to a grower about sizing an AutoPot system and reservoir to your space.
Sources
- AutoPot Watering Systems USA — 4Pot System maker product page (HTTP 200 via WAF-immune fetch, retrieved 2026-07-08; PRIMARY source): model APWS001; four 2.2 gal or 3.9 gal pots; four AQUAvalve5 valves; four Root Control Squares; four 1Pot grommeted trays and lids; 3/8 in Golf Filter Kit or 1/2 in – 3/8 in Click Fit tank filter; two 3/8 in Pro inline taps; 13 ft of 3/8 in black pipe; AQUAvalve5 wet-and-dry cycle; shipping weight 18 lbs; dimensions 17 × 17 × 26 in; tank options 12.4 gal hard tank / 13 gal FlexiTank / 25 gal FlexiTank / 25 gal FlexiTank Pro / no tank; AirBase and AirDome add-ons: https://autopot-usa.com/all-products/systems-and-modules/1pot-systems-kits/4pot-system/
- AutoPot Watering Systems USA — homepage (HTTP 200, retrieved 2026-07-08; maker mechanism statement): “AutoPot is a complete, electricity-free, gravity-fed irrigation system” that needs “no power, pumps, mains water pressure, or timers—just gravity from a reservoir”, and can “often be left unattended for weeks, thanks to the AQUAvalve”: https://autopot-usa.com/
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