AutoPot Tray2Grow with Grassroots Bed Living Soil System w/ Trellis Fittings

★★★★★ 4.3 20 reviews

US$78.73
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US$78.73
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Management number 250626160 Release Date 2026/09/17 List Price US$78.73 Model Number 250626160
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One living soil bed, built to fit your Tray2Grow tray. Watered automatically, zero electricity.

This kit pairs the AutoPot Tray2Grow tray with a Grassroots Living Soil bed sized to drop directly into it, replacing a row of separate pots or grow bags with one continuous root zone. The AQUAvalve5 refills the tray only when it runs dry, and the bed's MoistureLock liner pulls that water down through the soil instead of out the sides. One bed. One valve. Zero daily watering.

Bed Made in USA AQUAvalve5 Included MoistureLock Liner Zero Electricity
Free shipping on orders over $49
30-day returns on all orders
Serving growers since 2006
How it stacks up against pots or bags on a tray
Pots or grow bags on a tray
  • Hand water each pot or bag, or babysit a drip timer
  • Each container dries and drains on its own, so pockets go dry unevenly
  • Water runs out the container sides and off the bench
  • Arrange and level every pot individually, run separate drip lines to each
  • Dump and replace potting mix in every container each cycle
  • Multi-pot drip setups usually need a pump or timer to stay even
Tray2Grow + Grassroots bed
  • AQUAvalve5 refills the tray only when it runs dry
  • One continuous bed means even moisture edge to edge
  • MoistureLock liner pulls water down through the soil, not out the sides
  • Drop the bed in and level the tray once with the included spirit levels
  • Wash the fabric bed and reuse the same living soil for the next run
  • Fully passive. Gravity and capillary action only, nothing to plug in
Built for growers running a real living soil bed, not a row of pots

Built to match the Tray2Grow footprint DIRECT FIT

Grassroots engineered this bed to sit inside the Tray2Grow tray with room to spare for the valve and tubing, so you are not guessing at a fit or trimming anything down.

One root zone, not six

A single bed replaces a row of pots or bags, so roots share one soil mass instead of drying out at each container's edge.

MoistureLock liner keeps biology alive

A BPA-free waterproof liner covers the bed's upper walls and directs water down through the soil profile, with a breathable strip at the bottom for aeration.

AQUAvalve5 demand watering

Water only enters the tray when it runs dry, not on a timer, so the bed never sits in standing water and never dries out unexpectedly.

Reusable soil, true no-till

The fabric bed is machine washable and folds flat between cycles, and the liner keeps enough moisture in the soil to support the same biology run after run.

Optional trellis frame

Add 4-way and 3-way PVC corner fittings to build a trellis directly off the bed. You supply the 1-inch PVC pipe and cut it to your tent height.

What's in the box and how it's built
Tray dimensions
44" x 16.2" (112 x 41 cm)
Bed dimensions
36"W x 13"D x 14"H, 28 to 30 gal
Valve type
AQUAvalve5 (included)
Liner
MoistureLock, BPA-free, waterproof
Aeration
4" breathable strip at bed bottom
Reservoir options
6.6, 13, 25, 60-gal FlexiTank or your own
Trellis fittings
Optional, 4-way + 3-way PVC corners
Origin
Bed made in USA, valve by AutoPot (UK)
Download full setup guide (PDF)

Level the tray, drop in the bed, let gravity handle the rest

1

Level the tray

Set the Tray2Grow tray on a level bench, tent floor, or table using the three included spirit levels.

2

Drop in the Grassroots bed

Slide the bed into the tray. If you chose the trellis option, attach the PVC corner fittings and your own 1-inch PVC pipe now.

3

Fill and plant

Fill with your living soil mix, leaving 3 to 5 inches of headroom. For starting plants, dig a hole in the soil and fill the pocket with a seed-starting mix rather than seeding directly into the bed soil.

4

Connect water and walk away

Hook up your reservoir or one of the FlexiTank add-ons to the AQUAvalve5. It refills the tray only when it runs dry, feeding the bed from below.

Everything you need to get the bed watering itself
Included with every kit
  • Tray2Grow tray and lid
  • Grassroots living soil bed with MoistureLock liner
  • AQUAvalve5
  • 2x 3/8" grommets, 1x 1/4" overflow grommet
  • 3x circular spirit levels
  • 3.3 ft of 3/8" tubing
  • Root control sheet
Options and add-ons
  • Trellis fittings: No (basic) or Yes (4-way + 3-way PVC corners, pipe not included)
  • Reservoir: None, 6.6-gal, 13-gal, 25-gal, or 60-gal FlexiTank
Not sure which reservoir to add? The 13-gal FlexiTank covers most indoor setups with a weekly refill. Go 25-gal or larger if you're outdoors or running the bed in a hot climate. Call or email us: 716-217-0353 / help@
Frequently asked questions
Yes. The bed is purpose built for the Tray2Grow's footprint, with a few inches of clearance at each end for the valve and tubing. You do not need to trim or improvise a fit.
No. The bed replaces pots and bags entirely. Fill it directly with your living soil mix and plant straight into it, the same way you would a small raised bed.
Yes. The tray has an overflow plug that keeps it from filling past a safe level, so normal rainfall will not drown the bed. In hot climates we'd suggest the 25 or 60-gal FlexiTank so you're not refilling constantly.
The bed's rated capacity is 28 to 30 gallons, so budget for one full soil order rather than several small bags. Leave 3 to 5 inches of headroom at the top for mulch or a top dressing.
Yes. The MoistureLock liner keeps moisture even throughout the bed instead of drying fastest at the edges, which is what lets the soil biology survive between cycles. Chop the stem at soil level after harvest, top dress with compost and amendments, and replant.
Only if you're growing something that needs support. The trellis option gets you the PVC corner fittings; you supply your own 1-inch PVC pipe and cut it to your tent height. Skip it for low-growing crops like lettuce or herbs.
If you receive a defective or damaged unit, email us a photo at help@ and we'll make it right immediately. 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 and Grassroots 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@. We're easy to reach and happy to help!

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