Bead filter for 25000 liter pond

Bead Filter System for 25,000 Liter Ponds

Brand Chemical Supplies provides high-performance biological and mechanical filtration solutions for the South African aquaculture and koi-keeping sectors. For a 25,000 Liter (25m³) pond, a pressurized bead filter is the industry gold standard. It combines high-surface-area biological filtration with ultra-fine mechanical straining, ensuring crystal-clear water and a healthy environment for high-density fish populations.

Technical Specifications (Optimized for 25,000L)

• Tank Diameter: Typically 20″ – 24″ (500mm – 600mm).

• Bead Capacity: 40kg – 60kg of high-density polyethylene (HDPE) beads.

• Maximum Flow Rate: 12,000 – 15,000 L/h (To ensure a full water turnover every 2 hours).

• Multi-Port Valve: 6-way valve (50mm / 63mm ports) for easy backwashing.

• Internal Components: Slotted lateral pipe system to prevent bead loss during cleaning.

• Operating Pressure: Maximum 2.0 – 2.5 bar.

How It Works: Dual-Stage Filtration

1. Mechanical Filtration: As water is pumped through the pressurized tank, the dense bed of floating beads traps suspended solids and organic debris as small as 20 microns.

2. Biological Filtration: The millions of beads provide a massive surface area for beneficial nitrifying bacteria (Nitrosomonas and Nitrobacter) to colonize. These bacteria convert toxic ammonia and nitrites into harmless nitrates.

Key Features & Benefits

• Compact Footprint: Unlike large multi-chamber gravity filters, a bead filter is compact and can be easily hidden or housed in a small pump house.

• Superior Water Clarity: Capable of removing much finer particles than standard sand or sponge filters, resulting in “polished” water.

• Easy Maintenance (Backwashing): No more getting your hands dirty. Simply turn the multi-port valve to “Backwash” to agitate the beads and flush trapped waste out of the system via the waste port.

• Closed System Safety: Because it is a pressurized vessel, it can be installed above or below the water level without the risk of overflowing.

• Oxygen Enrichment: The internal agitation during the cleaning cycle helps degas the water and maintain high oxygen levels.

Primary Applications

• Professional Koi Ponds: Maintaining the pristine water quality required for high-value show koi.

• Aquaculture & Hatcheries: Providing reliable bio-filtration for fingerling tanks and grow-out systems.

• Large Ornamental Lakes: Managing organic loads in decorative estate ponds and water features.

• Public Aquaria: Serving as primary filtration for large display tanks.

Installation & Integration

• Pump Selection: Requires a high-head self-priming pump (e.g., 0.75kW or 1.1kW) to overcome the pressure of the bead bed.

• Pre-Filtration: Highly Recommended. To extend the interval between backwashes, use a sieve or leaf trap before the bead filter to catch large debris.

• UV Sterilization: Integrate an inline UV-C clarifier after the bead filter to eliminate green water (single-cell algae).

Contact our aquatic technical team today to secure the correct Bead Filter for your 25,000L pond and enjoy the benefits of professional-grade water clarity.