AutoPot FlexiTanks - Collapsible Water Reservoirs


Price:
Sale price$49.99

  • 🌱 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.
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    Description

    AutoPot FlexiTanks Collapsible Water Reservoirs | Happy Hydro

    A full reservoir that folds into a box

    AutoPot FlexiTanks are collapsible water reservoirs that ship flat and assemble in minutes with no tools. They fold down for storage between grows and fit in spaces where rigid tanks cannot. Available from 6.6 gallons up to 105 gallons (PRO), each FlexiTank includes a built-in tap and connects directly to your AutoPot system with 3/8" fittings.

    Free shipping on orders over $49
    30-day returns on all orders
    Serving growers since 2006
    Rigid reservoir vs. FlexiTank
    Rigid Reservoir
    • Takes up permanent floor space even when empty
    • Hard to clean corners and seams where algae and mineral deposits build up
    • No internal capacity markings on most models
    FlexiTank
    • Folds down and stores away when not in use
    • Smooth interior with no corners, easy to rinse and dry between grows
    • PRO models include internal capacity markings and reflective skin
    What makes the FlexiTank practical

    Fully Collapsible Folds flat

    Every FlexiTank folds into a single box for storage or shipping. The 25-gallon model ships in a box just 31" x 7" x 5" and weighs 4.4 lbs.

    No Tools Required

    Assembly means unfolding the tank, inserting the support frame (25g and up), and filling with water. The whole process takes a few minutes.

    Built-in Tap

    Every FlexiTank includes a tap fitting that connects to 3/8" OD tubing. FlexiTanks purchased with a system bundle include a click-fit tank filter.

    PRO Models: Reflective and Light-Tight

    The PRO line adds a reflective outer skin that blocks light, internal capacity markings, and concealed reservoir supports for a cleaner look.

    Elevate for Gravity Pressure

    Raise the FlexiTank at least 6 inches above the highest AQUAvalve for proper flow. Install your inline filter away from the tap to avoid pulling on the tank wall.

    Standard vs. PRO

    Standard FlexiTanks come in 6.6, 13, and 25 gallon sizes. PRO models (25 and 105 gallon) add the reflective skin, capacity markings, and hidden supports.

    FlexiTank dimensions by size
    6.6 Gallon
    11.8" dia x 14.6" H, 2.9 lbs
    13 Gallon
    13.8" dia x 20.9" H, 4 lbs
    25 Gallon
    17" dia x 29.5" H, 4.4 lbs
    25G PRO
    19" dia x 27.5" H, 8.4 lbs
    105G PRO
    28.9" dia x 41.3" H
    Assembly
    No tools, minutes
    Tap Fitting
    3/8" OD connection
    Min. Elevation
    6" above AQUAvalve

    How to set up your FlexiTank

    1

    Unfold and position

    Remove the FlexiTank from the box and unfold it where you want it to sit. For 25 gallon and larger models, insert the internal support frame before filling.

    2

    Elevate the tank

    Place the FlexiTank on a stand or platform at least 6 inches above the highest AQUAvalve in your system. This provides the gravity pressure needed for proper flow.

    3

    Connect fittings

    Attach your inline filter to the tubing (not directly to the tap) and run 3/8" OD tubing from the tank tap to your inline tap and then to your first AQUAvalve tray.

    4

    Fill and run

    Fill the tank with water and nutrients. Open the tap and let the system start. When the season ends, drain, fold, and store the FlexiTank until next time.

    Available sizes
    Standard FlexiTanks
    • 6.6 Gallon: 1 to 2 pot systems, compact spaces
    • 13 Gallon: 2 to 4 pot systems, grow tents
    • 25 Gallon: 4 to 6 pot systems, most popular
    PRO FlexiTanks
    • 25G PRO: Reflective, light-tight, capacity markings
    • 105G PRO: Larger grows, commercial setups
    Which size do I need? A good rule: each 3.9g pot uses roughly 1 to 2 gallons per week at peak growth. A 4-pot system does well with a 25-gallon tank, giving you roughly 1 to 2 weeks between refills. Call or email us: 716-217-0353 / help@happyhydro.com
    See also: The 12.4 Gallon Hard Tank is a rigid alternative for smaller setups. Use Easy2Flow to clean your FlexiTank between grows.
    Frequently asked questions
    FlexiTanks are built from thick, flexible material with sealed seams. Leaks are rare and almost always caused by punctures from sharp objects underneath the tank. Place it on a smooth, flat surface and you should have no issues. Many growers use the same FlexiTank for years.
    Standard FlexiTanks are the original design: collapsible, durable, and functional. PRO models add a reflective, light-tight outer skin that blocks algae growth, internal capacity markings so you can see your water level, and concealed support frames for a tidier appearance. Both use the same fittings and accessories.
    The tank needs to be elevated at least 6 inches above the highest AQUAvalve in your system. Any sturdy, level surface works. If your trays are on the floor, even a short table or cinder blocks will do. We also sell the AutoPot 12.4g tank stand, which works well for smaller FlexiTanks.
    Yes. The FlexiTank is just a water reservoir with a tap. You can use it for any gravity-fed setup or as a general-purpose water storage container. The tap accepts standard 3/8" OD tubing.
    Drain the tank, rinse the interior with clean water, and use Easy2Flow reservoir cleaner to remove any mineral buildup or biofilm. Let it air dry before folding for storage. Cleaning between cycles is important for preventing contamination in your next run.
    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!

    Your Happy Hydro Shipping Experience

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    Free shipping on orders over $49
    Plain-box discreet packaging
    Serving growers since 2006
    When you order from Happy Hydro

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    Shipping details at a glance
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    Why Buy From Happy Hydro

    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.

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