6.6 gallons per pot, zero electricity, and every plant waters itself
The AutoPot XL System uses gravity and the AQUAvalve5 to deliver water and nutrients from a single reservoir to 6.6-gallon pots with no pumps, no timers, and no power. Each pot gets its own valve and tray, so every plant sets its own wet/dry cycle independently. The round pot base rotates inside the tray, giving you full access to the plant without disconnecting anything. Start with 1 pot and expand to 100 using the same reservoir and pipe run.
Plant-driven wateringNo electricity requiredUp to 50% water savings1 to 100 pots, one reservoir
Free shipping on orders over $49
30-day returns on all orders
Serving growers since 2006
Gallery
See the XL system in action
Side by side
Hand watering vs. AutoPot XL
Hand watering
Water every few days, manually, per pot
Overwatering and underwatering depend on your schedule
Runoff collects in saucers, needs draining
Can't leave plants unattended for more than a few days
Each pot gets different amounts depending on pour speed
Scaling to more plants means more time hand watering
AutoPot XL System
AQUAvalve5 fills tray to 1" and shuts off automatically
Plants control their own wet/dry cycle through the valve
Zero runoff, water goes up through the root zone and stays
Leave for days or weeks, just keep the reservoir topped off
Every pot gets the same delivery from the same reservoir
Add pots with a tee connector, same pipe run, no extra work
What makes it different
Built around the AQUAvalve5
AQUAvalve5 with 5mm inlet 66% larger
The valve's dual-float mechanism fills each tray to exactly 1" of water, then closes. It only reopens after the plant has consumed the entire supply. The 5mm inlet is 66% larger than previous versions, reducing blockages and allowing liquid organic nutrients to flow through the system.
No electricity, no pumps, no timers
The entire system runs on gravity pressure from a reservoir raised at least 6" above the highest AQUAvalve5. No power outlet needed, no pump noise, and no single point of electrical failure.
Rotatable round pot base
The 6.6-gallon round pot sits inside a clam-shaped tray and spins freely. Rotate large plants to access every side for training, inspection, or defoliation without removing the pot from the system.
Expand from 1 pot to 100
Every system uses the same 3/8" pipe and tee connectors. Adding a pot means adding one XL expansion module and cutting in a tee. The reservoir feeds them all from a single line.
Works with any growing medium
Coco, perlite, soil blends, and clay pebbles all work. AutoPot recommends a 50/50 coco-perlite mix for best results. Heavier mixes benefit from adding an AirDome for extra root zone oxygen.
Up to 50% water and nutrient savings 50%
Bottom feeding means zero runoff. Water wicks upward through the medium and stays in the root zone until the plant uses it. Nothing drains out the bottom, nothing evaporates from the tray.
Attach the filter and inline tap to your reservoir (hard tank or FlexiTank). Run 3/8" pipe from the reservoir to your first pot, then tee off to additional pots. Raise the reservoir at least 6" above your highest AQUAvalve5.
2
Fill the pots with medium
Place a Root Control Disc at the bottom of each 6.6-gallon pot (or an AirBase if using AirDomes). Fill with your chosen medium. A 50/50 coco-perlite blend is the standard recommendation. For heavier soil mixes, add an AirDome for root zone oxygen.
3
Hand water for the first 2 to 3 weeks
Top-water your seedlings or clones until roots are established and reaching the bottom third of the pot. Then open the inline tap and let the AQUAvalve5 take over. Do not top-water after this point.
4
Keep the reservoir topped off
Refill when the reservoir reaches about one-third full. Never let it run completely empty. If the reservoir empties, air enters the lines and the AQUAvalve5 can lose its vacuum seal, which is the most common cause of system failure.
Not sure which size to start with? For a 4x4 tent, a 4Pot XL gives you one plant per corner. For a 2x4, start with 2Pot XL. Call or email us: 716-217-0353 / help@happyhydro.com
Questions
Frequently asked questions
No. You connect the pipe from the reservoir to the pots using push-fit connectors, place a pot and tray at each station, and open the tap. There's no wiring, no programming, and no calibration. The AQUAvalve5 handles everything from that point forward. Most people have the system running in under 30 minutes.
Yes. The AQUAvalve5 and its 3/8" fittings were specifically designed to handle liquid organic nutrients. The wider bore practically eliminates the blockages that plagued the older 1/4" systems. AutoPot recommends using their systems with AQUAvalve5 fittings for constant organic feeding. Earlier model valves with 1/4" pipe cannot handle organics reliably.
The PRO version includes an AirBase Round, AirDome Kit, and Propagation Dome for each pot. The AirBase replaces the perlite drainage layer at the bottom of the pot. The AirDome connects to an air pump (sold separately) and pumps oxygen directly into the root zone, which improves nutrient uptake and root development. The Propagation Dome fits over the pot and creates humidity for young plants during establishment.
That depends entirely on your reservoir size relative to your pot count and how much your plants are drinking. A single plant on a 12.4-gallon tank in veg can go well over a week. Four large plants in flower on the same tank might need a refill every few days. The rule is simple: never let the reservoir run empty. If air enters the lines, the AQUAvalve5 can lose its vacuum seal and stop reopening.
The XL pot gives roots nearly 70% more volume than the standard 3.9-gallon AutoPot. More root space means larger plants, better nutrient buffering, and less chance of the medium drying out too quickly under intense light. If you're growing in a 4x4 or larger tent and want to maximize plant size, the XL is the right choice.
Yes. Bottom-fed systems don't flush excess salts the way top-watering does, so maintaining proper pH in the reservoir is important. Target 5.8 to 6.2 for coco and hydro media, or 6.0 to 6.5 for soil blends. Check and adjust pH each time you refill.
If you receive a defective or damaged unit, email us a photo at help@happyhydro.com and we'll make it right immediately: replacement or refund, your call. For change-of-mind returns, we accept returns within 30 days for 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.
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!
Questions? We're easy to reach.
Happy Hydro has been serving growers since 2006. Call or email us before you order, after you order, or any time something comes up. When you're happy, we're happy.
We ship fast from Buffalo, NY. Most orders land at your door in 3-5 business days. Free standard shipping on orders $49+, plain-box packaging, and real humans ready to help if anything goes sideways.
Free shipping on orders over $49
Plain-box discreet packaging
Serving growers since 2006
What to expect
When you order from Happy Hydro
Fast & Free on Orders $49+
Free standard shipping to the lower 48. Most orders ship same or next business day from our Buffalo, NY warehouse via UPS Ground or USPS Ground Advantage. Expedited options available at checkout. * Soils may incur added fees for Western US delivery * Some products ship direct from the vendor's warehouse to keep prices lower and get your order there faster
Every order ships in a plain brown box with no branding or logos. Your purchase stays 100% private. We can also ship to your local UPS Store on request.
Specs
Shipping details at a glance
Delivery time
3-5 business days
Default carrier
UPS Ground or USPS
Signature required
Orders over $500 only
Free shipping threshold
$49+ to the lower 48
International
Canada only Email help@happyhydro.com your address & a screenshot of your cart for a quote
Returns
30 days on most orders Exceptions apply — orders over $400, multi-box shipments, and some vendor items may incur return shipping charges. Full policy
Questions
Frequently asked questions
Shipping
Check the order confirmation sent to your email or phone after checkout — it includes a tracking link. If you use the Shop App, you can track your order there too.
Most orders arrive in 3-5 business days. Expedited options (2-day, overnight) are available at checkout if you need it sooner.
Signature is only required on orders over $500. For added privacy, we can ship to your local UPS Store so you pick it up on your own schedule — just ask.
We default to UPS Ground or USPS Ground Advantage. Select an expedited option at checkout and we'll use the appropriate carrier for that service.
P.O. boxes: Yes, for small and lightweight items.
International: Canada only. Email help@happyhydro.com your address and a screenshot of your cart for a shipping quote.
APO/FPO: Not currently available.
For Canadian orders, import duties and taxes are the buyer's responsibility. You'll complete payment using your tracking number at UPS.com when your package arrives.
Title and risk of loss pass to you once we hand off to the carrier, but that doesn't mean we leave you hanging. Email help@happyhydro.com and we'll work overtime to track it down and make it right.
Payment
We accept credit/debit cards, PayPal, Coinbase, and Happy Hydro gift cards. Your card is charged immediately at checkout.
Double-check your billing address and card number. For larger purchases, your bank may have flagged it — a quick call to authorize the transaction usually sorts it out.
Promotions
Enter your code in the "Promo code" box at checkout and click Apply. One code per order, but you can combine a gift card with a promo code if you have both.
Subscribe to our mailing list for exclusive discounts and early access to sales. You can sign up at the bottom of any page on our site.
Returns & Cancellations
Email help@happyhydro.com within 30 days of delivery and we'll get you a refund or replacement, your choice. Items must be in original packaging with all parts in resalable condition. Multi-light orders, grow tents, orders over $500, and multi-box shipments may incur return shipping charges. AK, HI, and international buyers are responsible for return and warranty shipping. Some vendor-specific policies may apply — check the product page for details.
Refunds are processed through Shopify within 10 business days. Most customers see the credit back in about 5 days.
Reply to your order confirmation email or email help@happyhydro.com as soon as possible. Canceled orders may incur a processing fee depending on your payment method:
Credit/debit card: 2.9%
PayPal or Venmo: 3.5%
International PayPal: 4.0%
American Express: 4.1%
Shop Pay Installments / PayTomorrow: 6.5%
Support & Policies
Call or chat with our grower support team at 716-217-0353, Monday-Friday 10 am-4 pm EST. You can also email help@happyhydro.com any time and we'll get back to you quickly.
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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Payment & Security
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
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