DIY Pond Waterfall 1200

The Blue Thumb DIY Pond Waterfall 1200 combines biological filtration, water movement and a 14-inch waterfall spillway in one compact unit. Formerly sold as the Serenity Waterfall, it is designed for new or existing ponds up to 1,200 gallons and supports a cleaner, better-aerated pond environment.

Water from a separately purchased pump enters through the 1.5-inch plumbing connection, passes through the included filter mat and biological media, and returns to the pond over the spillway. The box can be concealed with surrounding rockwork to create a natural-looking waterfall.

Key Features

• For ponds up to 1,200 gallons: Suitable for an approximate pond footprint of up to 8 by 11 feet or a similarly sized pond.
• 14-inch spillway: Returns filtered water as a broad waterfall while adding movement and aeration.
• Biological filtration: Included media provides surface area for beneficial bacteria that help process pond waste.
• Maximum flow of 2,000 GPH: The operating flow delivered to the waterfall must not exceed this rating.
• Compact installation: The box measures 19 × 15.5 × 14.5 inches high and can sit at the pond edge or at the head of a short stream.
• Made in the USA: Blue Thumb covers its engineered plastic waterfall-filter components with a lifetime warranty for the original purchaser, subject to warranty terms.

Waterfall Box Comparison Chart

Installation and Care

1. Position the waterfall at the pond edge or head of the stream. When used with a skimmer, place the waterfall opposite the skimmer to promote circulation.
2. Compact the base, level the box from side to side and tilt it slightly forward—approximately one-quarter bubble on a level—so water moves toward the spillway.
3. Connect the pump line to the rear 1.5-inch fitting. Use Teflon tape on threaded connections and the appropriate primer, cement or hose clamp for the selected pipe or tubing.
4. Install the white filter mat in the bottom of the box and place the biological media above it.

Inspect the media periodically and clean it thoroughly about once per year when pond water is at its coldest or below 50°F. When possible, rinse the media with collected pond water; chlorinated tap water can kill the beneficial bacteria living on it.