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Four dark gray hydroponic buckets connected by black tubing to a central reservoir in a white background.

Rows of plants in black pots with bamboo stakes, supported by irrigation lines on a white greenhouse floor.

Green plants in square black pots with automated irrigation tubing on a white surface.

AutoPot XXL self-watering system with black square pots and a blue reservoir for efficient, electricity-free gardening.

Pepper plants in black fabric pots with bamboo stakes and irrigation trays on a white floor.

Row of hydroponic pots with coco coir, support stakes, and blue irrigation lines inside a greenhouse.

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Leeks growing in individual black pots with coir substrate in a hydroponic greenhouse row.

Large green plant in a black plastic pot next to a blue FlexiTank water reservoir in a greenhouse.

Vibrant tomato plants with ripening red and green fruit growing in white hydroponic containers.

Diagram showing two irrigation layout options for a 12.4 gal reservoir with AQUAvalve components and tubing.

Dimensional diagram of a 6.6-gallon pot, showing top and side views with specific measurements in inches.

Hydroponic system with four black cylindrical pots connected by tubing to a central rectangular reservoir.

Four black circular grow pots connected to a central reservoir tank by black irrigation tubing on a white background.

Black fabric GeoPot with side labels, shown with 11-inch diameter and 7.25-inch height dimensions.

Black 5-gallon fabric grow pot with dimensions of 11" x 12.25", shown with compatible tray system list.

Diagram showing two layout options for an AutoPot system with a 12.4 gal reservoir, piping, and various connectors.

Four black cylindrical pots connected by tubing to a central rectangular reservoir tank on a white background.

Blue reservoir connected by hoses to four black cylindrical fabric grow pots on a white background.

Autopot 4-pot self-watering system with four grey fabric pots, black trays, and blue tubing connected to a black reservoir.

Autopot 4-pot self-watering system with four grey fabric pots connected by blue tubing to a black water reservoir.

AutoPot 4-pot self-watering system with black plastic pots, clear covers, a reservoir, and tubing for hydroponic gardening.

Autopot 4-pot self-watering system with black reservoirs and four white square propagator covers connected by tubing.

Autopot 4-pot self-watering system featuring a blue fabric water reservoir connected to four black square plastic pots.

Autopot 4-pot self-watering system with a blue FlexiTank and black plastic pots connected by irrigation tubing.

Autopot 4-pot self-watering system with a blue collapsible water tank connected by blue tubing to four black fabric pots.

Autopot 4-pot self-watering system with four grey fabric pots connected by blue tubing to a tall blue water reservoir.

Autopot 4-pot self-watering system with black plastic pots, clear covers, and a tall blue flexible water tank.

Autopot 4-pot self-watering system with a tall blue FlexiTank, four black plastic pots, and air-dome accessories.

Autopot 4 Pot Self Watering Systems

Name: Autopot 4 Pot Self Watering Systems
Brand: AutoPot
SKU: APWS001-2.2
Price: 228.95 USD
Availability: InStock
Rating: 5.0 (17 reviews)

Save $22.90

AutoPot

Price:

$228.95 $251.85

Pot Size: 2.2 Gal

Reservoir: 12.4 Gal

Add Propagation Domes, AirBases, and AirDomes: No

Variant

Quantity:

🌱 Compatible with Any Growing Medium: Perfect for All Garden Sizes, Expandable from a Single Pot to a Large Setup.

💸 Best Price Guaranteed: Shop with Happy Hydro for the Lowest Prices on AutoPot Systems.

💧 Save Water and Nutrients: AutoPot Systems Cut Water and Nutrient Use by Up to 50% While Boosting Yields.

Free Shipping Over $49

Financing
Available Here

Discreet Packaging

Have a Question?
716-217-0353

AutoPot 4Pot Self-Watering System - Happy Hydro

Fill the tank once and four plants water themselves for days.

The AutoPot 4Pot runs four pots from a single reservoir on gravity alone. Each pot sits in a tray with its own AQUAvalve5, a float valve that floods the tray when the medium dries down, then waits for the plant to drink it dry before it refills. No pumps, no timers, nothing to plug in. Fill the tank, walk away, and let the plants set the pace.

No pumps or electricity Soil, coco, or fabric Designed and made in the UK Expands to 100 pots

Free shipping on orders over $49

30-day returns on all orders

Serving growers since 2006

See it in action

How the AutoPot 4Pot waters four plants on its own

Why it's different

Hand-watering four plants vs. the AutoPot 4Pot

Hand-Watering

Water every pot by hand, most days
Guess at how much each plant needs
Overwatering drowns roots, underwatering stalls growth
Excess water and feed run off down the drain
Plants dry out the moment you travel
Automating it means pumps, timers, and a power draw

AutoPot 4Pot

Fill one reservoir and all four pots feed themselves
Each plant draws only what it needs, when it needs it
The tray refills only after it runs dry, so roots never sit in water
No runoff and no recirculation, so nothing is wasted
A full tank covers several days away from the grow
Runs on gravity, so no pumps, timers, or electricity

How the AQUAvalve5 gives each plant a wet and dry cycle

Every pot sits in its own tray, and inside each tray is an AQUAvalve5. It is a mechanical float valve with two chambers and no moving electronics. When the tray is empty, the valve opens and lets water flow in from the reservoir until the tray fills to about an inch and a half. The potting medium wicks that water up to the roots. The valve then stays shut until the plant has drawn every drop out of the tray. Only when the tray runs completely dry does it open again.

That dry-down between waterings is the whole point. It gives roots a chance to breathe and reach for water instead of sitting in a constant puddle, which is what drives strong root growth and reduces the risk of root problems. The reservoir sits at the same level as the pots, so the only force moving water through the line is gravity. There is nothing to time, nothing to pump, and nothing that fails when the power goes out.

What makes it work

Four self-regulating plants from one tank

One AQUAvalve5 per pot, each working on its own 4 independent valves

Every pot has its own valve, so four plants at different sizes or stages each self-regulate from the same tank without affecting one another. A young plant sips while a mature one drinks, and neither waits on the other.

Root control keeps the valve running clean

A root control disc on plastic pots, or a PotSock on fabric pots, sits between the pot and tray so roots take up water without growing into the AQUAvalve5 and clogging it. It keeps the system reliable through a long grow.

Pick your pot: plastic or fabric, seven sizes

Plastic pots come in 2.2, 3.9, and 6.6 gallon in black or white; fabric GeoPots come in 3, 5, 9, and 13 gallon and air-prune the roots. Larger pots carry bigger plants through a longer season, and white plastic reflects light to run a few degrees cooler.

One tank feeds all four pots

You manage a single water level instead of four. Every valve pulls from the same reservoir, so topping up one tank waters the whole set, and the water line at your feet is the only thing you have to keep an eye on.

Fill it with soil, coco, or any wicking mix

The system draws moisture up from the tray, so it works with any medium that wicks well and still drains. Coco-perlite blends and quality potting soil are the common picks, and living soil works too.

Add pots as your grow grows

The 4Pot uses the same parts as every other AutoPot size. Add expansion modules one plant at a time on the same line, up to about 100 pots from a large enough reservoir.

Specs

Numbers and what's in the kit

Pots Included

4 pots: plastic 2.2 to 6.6 gal, or fabric 3 to 13 gal

Pot Color

Black or white (plastic pots)

Reservoir Options

12.4 gal hard tank or 25 gal FlexiTank

Valves

4x AQUAvalve5, one per pot

Tubing

13 ft of 3/8 in pipe, plus connectors

Filter

3/8 in golf filter or click-fit tank filter

Power

None, gravity-fed

Made In

United Kingdom

Setting up your 4Pot system in four steps

1

Position the tank level with the pots

Set the reservoir on the same surface as your trays, or slightly higher, so gravity carries water through the pipe. Run the tubing to each tray and fit an AQUAvalve5.

2

Establish your plants before connecting

Add a 1 inch drainage layer at the bottom of each pot, or fit an AirBase to skip it, then plant and hand-water from the top for the first 7 to 10 days. Wait until roots are established, roughly 6 inches of top growth in a 2.2 gal pot and up to 12 inches in the larger sizes, before you connect the plant.

3

Fill the reservoir and open the taps

Add water and your liquid feed to the tank, then open the inline taps. The trays fill on their own and the medium starts wicking water up to the roots.

4

Top up the tank and let it run

From here the AQUAvalve5s handle the watering. Refill the reservoir before it empties and check your feed mix, and the plants take care of the rest.

Grower tips

Our top 10 tips for running AutoPots

In the box

What comes with a 4Pot system, and how to spec it

Included with every 4Pot system

4x grommeted tray and lid, sized to your pot
4x pot in your chosen size, plastic or fabric
4x AQUAvalve5, one per tray
4x root control disc (plastic) or PotSock (fabric)
13 ft of 3/8 in pipe with tee and cross connectors
Inline taps, top-hat grommet, and filter

Choose your options

Plastic pots: 2.2, 3.9, or 6.6 gal, in black or white
Fabric GeoPots: 3, 5, 9, or 13 gal
Reservoir: 12.4 gal hard tank or 25 gal FlexiTank
Pro option: adds propagation domes, AirBases, and AirDomes for a stronger start and more root-zone oxygen. Plastic pots only, and the AirDomes run off a small air pump.

Not sure which pot size or reservoir to pick? Tell us your space and what you're growing and we'll spec it for you. Call or email: 716-217-0353 / help@happyhydro.com

Questions

Frequently asked questions

Will my plants drown or get overwatered?

Not once the system is running the way it should. The AQUAvalve5 only refills a tray after the plant has emptied it, so roots always get a dry period between waterings. The one time plants can sit too wet is early on, before the roots are big enough to drink a full tray. That's why the establishment step below matters so much.

Do I need electricity, a pump, or a timer?

No. The watering runs on gravity. As long as the reservoir sits at the same level as the pots or slightly above, water flows to the valves on its own, with nothing to plug in and nothing that fails in a power outage. One honest note: if you run mineral nutrients through the tank, a small pump or a daily stir keeps them from settling out of solution. That is optional and the watering itself still needs no power.

When do I connect my plants to the system?

Wait until the roots are established, and hand-water from the top for the first 7 to 10 days after transplanting. A good rule of thumb is about 6 inches of top growth in a 2.2 gal pot, around 12 inches in the 6.6 gal and larger sizes. If you connect too early, the roots can't drink fast enough, the tray stays wet, and the plant can drown. A little patience here is the single biggest factor in a successful AutoPot grow.

What growing medium works best?

Anything that wicks water up well and still drains. A quality potting soil or a coco blend both work, and most growers add extra perlite for drainage so the medium never stays soggy. Avoid heavy, dense mixes that hold too much water. Fabric pots work too and add air-pruning at the edges.

How often do I have to refill the reservoir?

It depends on plant size, stage, and how warm your space is. A 12.4 gallon hard tank easily runs four pots, and early in a grow it can go several days between fills. Big plants in peak growth drink faster, so you'll check it more often then. One habit to keep: don't let the tank run completely dry before you top it up.

Can I expand later or mix pot sizes?

Yes. Every AutoPot size uses the same AQUAvalve5 and the same 3/8 inch tubing, so you can add expansion modules one pot at a time on the same line. Each tray's valve works independently, so different pot sizes on one reservoir don't interfere with each other. The only limit is keeping the reservoir large enough to feed everything.

What if I receive a damaged system or it isn't right for my setup?

If you receive a defective or damaged unit, email us a photo at help@happyhydro.com and we'll take care of you. For change-of-mind returns, we accept returns within 30 days for most items in new, resalable condition. If you're not sure whether this product is right for your setup, call us first at 716-217-0353. We'd rather answer your questions before you order.

Why should I buy the AutoPot 4Pot from Happy Hydro instead of somewhere else?

Happy Hydro has been selling growing equipment since 2006. We've carried AutoPot for years because the systems work great and customers who buy them leave happy. Have questions before you order? Call 716-217-0353 or email help@happyhydro.com. We're easy to reach and happy to help!

Why Buy From Happy Hydro

Happy Hydro began as a pipe dream in a garage and has grown into something built almost entirely on word of mouth and repeat customers. Rather than focusing on raising margins and obsessing over profits, we've always believed that the right combination of competitive prices, superior products, and world-class customer service speaks for itself. Our philosophy will never change: when you're happy, we're happy.

Our commitment

What you can expect from Happy Hydro

Real People, Real Growers

Our grower support team isn't a call center. They know the products because they're passionate about growing. Reach us Monday-Friday, 10 am-4 pm EST at 716-217-0353 or help@happyhydro.com, before you order or after.

Hand-Picked by Growers, for Growers

Every brand we carry was chosen by our founders because it performs. We only stock premium brands we believe in, and every item is inspected before it leaves our warehouse.

Fair Prices and Free Shipping

We work hard to keep our prices as low as manufacturers allow, and we include free shipping on orders over $49 so there are no surprises at checkout. Find a lower price anywhere and we'll match it.

Authorized for Every Brand We Carry

We're an authorized dealer for every manufacturer on our site. That means you get the full manufacturer's warranty on every purchase. No grey market, no expired stock.

30-Day Returns on Most Orders

Hard to commit to a product you haven't tried. Return most items within 30 days in original condition and we'll take care of it. Read the full policy.

Secure Shopping, Private Data

Every transaction is SSL encrypted. We don't store payment information and we will never sell your data to anyone, ever.

Volume and Commercial Pricing

If you're a commercial grower or putting together a large order, reach out before you buy. We have pricing available that we can't advertise publicly. Call 716-217-0353 or email help@happyhydro.com and we'll take care of you.

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Autopot 4 Pot Self Watering Systems

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