AutoPot Expansion Modules let you add one pot at a time to an existing system without buying a whole new kit. Each module includes the tray, lid, pot, AQUAvalve5, connectors, tubing, and root control material needed to connect one additional plant site to your reservoir. Available for 1Pot (2.2g or 3.9g), XL (6.6g), GeoPot (3g or 5g fabric), XXL (9g or 13g fabric), and easy2grow (dual-pot tray) systems.
Free shipping on orders over $49
30-day returns on all orders
Serving growers since 2006
Gallery
How to add an Expansion Module
Features
Why modules are the smart way to scale
Everything You Need for One More Pot
Each module ships with the tray, lid, pot, AQUAvalve5, tee connectors (3/8" and 1/2" to 3/8"), tubing, and root control material. Substrate sold separately.
Mix and Match Pot Types
Run 1Pot, XL, and GeoPot modules on the same tubing line from a single reservoir. Each module's AQUAvalve5 controls watering independently per tray.
Black or White Pots (1Pot)
The 1Pot module (2.2g and 3.9g) is available in black or white. White pots reflect more light and run cooler in warm grow spaces.
GeoPot Modules Include PotSock
GeoPot expansion modules come with a PotSock Round that must be fitted over the fabric pot before placing it in the tray. This prevents roots from growing into the AQUAvalve.
XXL Modules for 9 and 13 Gallon Fabric Pots
The XXL module uses the 1Pot XXL tray with grommeted lid, a 9 or 13 gallon GeoPot G Lite fabric pot, and a PotSock XXL. Includes an adaptive collar to fit the pot to the tray.
No Reservoir Required
Modules do not include a reservoir or inline tap. They connect to an existing system's tubing line. If you need a standalone setup, start with a full system kit instead.
Specs
What each module type includes
1Pot Module
2.2g or 3.9g pot, tray, AQUAvalve5, root control disc
XL Module
6.6g pot, XL tray, AQUAvalve5, root control disc
GeoPot Module
3g or 5g fabric pot, XL tray, AQUAvalve5, PotSock
XXL Module
9g or 13g fabric pot, XXL tray, AQUAvalve5, PotSock XXL
Connectors
3/8" tee or 1/2" to 3/8" tee
Tubing
3.3 ft of 3/8" pipe (5 ft for XXL)
Valve
AQUAvalve5 included
Colors
Black (White available for 1Pot)
How to add a module to your system
1
Turn off the system
Close the inline tap on your reservoir to stop water flow. Drain the tubing line if possible to avoid spills when cutting in.
2
Cut into the existing line
Cut the 3/8" tubing at the point where you want to add the new pot. Insert the included 3/8" tee connector. Use the 1/2" to 3/8" tee if your main line is 1/2" pipe.
3
Set up the new tray
Place the tray and lid where you want the new pot. Install the AQUAvalve5 through the grommeted tray hole. Add root control material, drainage layer (or AirBase), and substrate.
4
Connect and restart
Run the included 3/8" pipe from the tee to the new tray's AQUAvalve. Open the inline tap and let the system fill the new tray. Transplant when the tray is full.
Tips
Top 10 tips for AutoPot growers
Options
Choose your module type
Plastic pot modules
1Pot (3.9g): Black or White
1Pot (2.2g): Black or White
XL (6.6g): Black
easy2grow (3.9g): Black (dual-pot tray)
Fabric pot modules
GeoPot (3g): Fabric pot + PotSock
GeoPot (5g): Fabric pot + PotSock
XXL (9g): Fabric pot + PotSock XXL
XXL (13g): Fabric pot + PotSock XXL
Not sure which module matches your system? Check the pot size in your current setup. If your pots are square and hold 3.9 gallons, you need a 1Pot module. If they're round and hold 6.6 gallons, you need an XL module. Call or email us: 716-217-0353 / help@happyhydro.com
Yes. All AutoPot modules use the same AQUAvalve5 and connect with the same 3/8" tubing. You can mix 1Pot, XL, and GeoPot modules on a single reservoir line. Each tray's AQUAvalve controls watering independently, so different pot sizes don't interfere with each other.
There's no hard limit on modules per reservoir, but your reservoir needs to be large enough to keep up. A 12.4 gallon Hard Tank handles up to about 6 pots. A 25 gallon FlexiTank handles 6 to 9. For larger setups, a 60 or 105 gallon tank gives you headroom. The real constraint is refill frequency, not system capacity.
No. Modules include the tray, pot, valve, connectors, tubing, and root control material. You supply your own substrate, drainage layer or AirBase, and any amendments. Use the same mix as the rest of your system for consistency.
Fabric pots allow roots to grow through the pot walls and into the tray, which can clog the AQUAvalve. The PotSock wraps around the outside of the fabric pot and contains root growth within the pot. Plastic pots don't have this issue because the rigid walls contain roots on their own. 1Pot modules include a root control disc instead, which goes at the bottom of the pot.
Yes, but you'll need to briefly shut off the inline tap to cut into the tubing line and insert the tee connector. It takes a few minutes. The existing pots won't be affected as long as their trays have water in them during the interruption.
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.
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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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