Rhino Retro Bottom Drains with Air Diffuser

Description

Retrofit Drain + Aeration = Cleaner, Healthier Ponds

The Rhino Retro Bottom Drain with Air Diffuser takes the simplicity of an over-the-liner drain and adds a powerful layer of functionality: built-in aeration. Perfect for existing ponds without bottom drains, this model boosts oxygen levels while also improving circulation and waste removal.

The rising column of thousands of air bubbles per second creates a gentle sweeping motion across the pond floor, helping lift debris toward the drain and keeping your pond cleaner with less effort.

Ideal for Pre-Constructed Ponds

This drain is specifically designed for ponds that cannot accommodate underground plumbing—including those with pre-installed liners, concrete bottoms, or pre-formed shapes. Simply fill the ballast chamber with sand, stone, or another inert material to keep it grounded, then connect a suction hose or rigid plumbing to the side port and link it to your pump system.

The unit can be relocated seasonally—for instance, moving to shallower water in winter to maintain warmer water at the pond’s lowest point for your fish.

Why Add Air Diffusion?

• Increases dissolved oxygen—vital for fish health, especially in warmer months.

• Improves circulation—enhances waste transport toward the drain.

• Reduces stagnation—helps prevent anaerobic zones and buildup of sludge.

• Supports biological filtration—aerobic bacteria thrive in well-oxygenated environments.

Key Features:

• Built-in air diffuser for improved oxygenation and circulation.

• No need to penetrate liner or pond structure.

• Heavy-duty PVC construction with no sharp edges to damage liners.

• Ballast-fill chamber for simple, secure installation.

• Completely non-injection molded design for maximum strength and longevity.

• Easily movable for seasonal or maintenance adjustments.

A Better Pond Starts at the Bottom

Too often, pond owners realize—too late—that a lack of proper drainage leads to debris buildup, cloudy water, and costly clean-outs. The Rhino Retro Drain with Air Diffuser is your solution to a healthier, easier-to-maintain pond, without renovation or reconstruction.

Start clean and stay clean—install a Rhino Retro Drain with confidence.