Large 30" Elite Waterfall Box [PB1090]

Large 30" Elite Waterfall Box

Build a broad, natural-looking pond waterfall while adding biological filtration to the recirculating system. The Large Elite Waterfall Box is sized for ponds up to 6,000 gallons, accepts up to 10,000 GPH and includes a landscape lid that helps the installed box disappear into the surrounding rockwork and planting.

Water enters through the lower plumbing connection, moves through the filter media and returns to the pond across the detachable 30-inch spillway.

Two side spinweld fittings let you bring the feed line in from either direction. The second fitting can be plugged, used for a second pump line or configured for back-flushing.

The faceted box profile and included landscape lid help integrate the filter into a berm, stream head or pond edge while preserving access for maintenance.

This is a waterfall filter box, not a complete pond kit. Confirm the 31.75" × 40.5" × 25.75" box footprint, the required 2- or 3-inch flexible PVC run, total dynamic head and desired waterfall flow before selecting a pump. A compatible pump, skimmer, hose, liner, underlayment, biological media, PVC primer and cement, waterfall foam, rockwork and site preparation are not included.

The supplied parts support installation of the box and its liner connection. The biological media that fills the mesh bag is selected separately.

Large Elite waterfall box

Detachable spillway weir

Landscape lid

Two green Matala filter mats

One 24" × 36" mesh media bag

Male plumbing adapter and threaded plug

Self-tapping stainless steel screws and screw caps

Liner clips

Black silicone and Teflon thread tape

Installation instructions

Made in the USA.

The included mesh bag arrives without loose biological media. For this 30-inch model, our current sizing guidance recommends 5 cubic feet of Bacti-Twist Biological Filter Media. Fill the bag and place it above the two horizontal Matala mats, or follow the installation guide for an alternate vertical Matala arrangement.

Choose the model around the pond volume, planned waterfall width and actual pump flow at the installed head height. Maximum flow is a box limit, not a promise that every pump will produce that flow after plumbing and elevation losses.

Spillway: 14"

Dimensions: 19" × 15.5" × 14.5"

Maximum flow: 2,000 GPH

Filters up to: 1,200 gal.

Dimensions: 20.5" × 20" × 15.75"

Maximum flow: 2,500 GPH

Filters up to: 1,500 gal.

Spillway: 20"

Dimensions: 22" × 23" × 19"

Maximum flow: 4,500 GPH

Filters up to: 2,000 gal.

Dimensions: 23" × 24.75" × 21.75"

Maximum flow: 3,500 GPH

View Small Elite

Spillway: 22"

Dimensions: 31" × 30.5" × 23"

Maximum flow: 6,000 GPH

Filters up to: 3,500 gal.

View Medium Elite

Spillway: 30"

Dimensions: 31.75" × 40.5" × 25.75"

Maximum flow: 10,000 GPH

Filters up to: 6,000 gal.

Spillway: 40"

Dimensions: 35.75" × 50" × 30.75"

Maximum flow: 20,000 GPH

Filters up to: 10,000 gal.

View Extra Large Elite

Review the complete installation guide before excavation or liner cutting. This built-in component must be supported, leveled, plumbed and sealed correctly.

Place the waterfall opposite the skimmer for pond circulation, either at the pond edge or at the head of a stream. Confirm viewing angles and access for future media cleaning.

Compact the support area to reduce settling. Keep the box level from side to side and tilt it slightly forward—about one-quarter bubble—so water travels evenly toward the spillway.

Choose the inlet side, tape the threaded male adapter and plug the unused fitting unless it will serve a second pump line or back-flush setup. Join clean flexible PVC with the appropriate PVC primer and cement.

Leave a little liner slack, clean the bonding surfaces, apply the included silicone, fasten the weir with the stainless screws and only then trim the liner opening. Follow the manual’s fastening sequence.

Set the two Matala mats horizontally in the bottom. Fill the mesh bag with selected biological media and place it above the mats.

Install the landscape lid, complete the rockwork and use black waterfall foam where needed to direct visible flow. Test for even spillway flow and leaks before final landscaping.

Inspect the system as pond conditions change. When the waterfall media needs cleaning, rinse it with pond water when possible; chlorinated tap water can damage the beneficial bacteria.

The installation guide calls for a thorough waterfall-media cleaning about once per year, when water is coldest or below 50°F. Actual maintenance frequency varies with debris, fish load and feeding.

In climates with prolonged freezing, remove the pond pump and follow its storage instructions. Rinse and store the removable media for winter, then reinstall it during spring startup.

Use the model-specific waterfall guide for the box installation and the broader pond guides for system planning and seasonal care.

This official Blue Thumb pond-kit installation guide demonstrates how an Elite Waterfall Box fits into a complete pond build. Use the model-specific PDF above for PB1090 dimensions, 2- or 3-inch plumbing and exact waterfall-box assembly.

Video courtesy of Blue Thumb. Products, accessories and landscaping shown may vary; only the components listed on this page are included with PB1090.

Our Sales/Tech Team can help you review pond volume, planned waterfall width, plumbing size, pump flow at total dynamic head and the other components needed for your installation.

No. PB1090 is the biological waterfall box and its listed installation hardware. The pump, skimmer, flexible PVC, liner, underlayment, loose biological media, primer and cement, waterfall foam, rocks and gravel, electrical service and site work are selected separately.

The maximum recommended flow is 10,000 GPH. Size the pump by its delivered flow at your installation’s total dynamic head—not by the pump’s zero-head rating—and stay within the waterfall box limit.

It is rated for ponds up to 6,000 gallons. Fish load, feeding, debris, sunlight, circulation and maintenance also affect filtration needs, so contact our Sales/Tech Team when the pond will carry a heavy biological load.

Yes. The installation guide states that the 30-inch Elite Waterfall accepts either 2- or 3-inch flexible PVC. The box has two 3-inch spinweld fittings; use the supplied plumbing adapter arrangement and confirm the complete plumbing plan before installation.

Two green Matala filter mats and one mesh media bag are included. Loose biological media for the bag is not included. Our sizing guidance recommends 5 cubic feet of Bacti-Twist for the 30-inch box.

Place it opposite the skimmer to encourage circulation through the pond. It may sit at the pond edge or at the top of a stream. Compact the base, keep the box level from side to side and maintain access for media service.

Inspect it according to pond conditions. The guide recommends a thorough cleaning about once per year when the water is coldest or below 50°F. Rinse with pond water when possible so chlorine does not harm the beneficial bacteria.

Blue Thumb’s lifetime limited plastics warranty covers Blue Thumb-branded engineered-plastic waterfall filters against manufacturing defects for the original purchaser, subject to proper installation and the complete written terms. The warranty does not extend a lifetime term to separately purchased pumps, lights or other equipment.