Premium Koi Filtration System | Mechanical Biological Filter | Evolution Aqua

Why Nexus+ Is Different

Most filters force you to choose between:

Mechanical filtration

Biological filtration

Ease of cleaning

The Nexus+ does all three.

✔ Removes solids efficiently

✔ Processes ammonia and nitrite biologically

✔ Cleans easily

✔ Upgrades to automatic cleaning

✔ Scales with serious koi systems

Dual-Stage Filtration in One System

Stage 1 – Mechanical Filtration (EAZY)

Pond water enters the inner chamber where:

• Larger solids settle out in the vortex zone

• Fine debris is trapped by static K1 Micro Media

• Cleaner water moves to biological treatment

Improved waste capture means better solids handling and reduced clogging.

Stage 2 – Biological Filtration (K+ Moving Bed)

Mechanically cleaned water passes into the outer chamber containing:

• K+ Media Moving Bed

• Massive protected bacterial surface area

• Constant aerated biological treatment

This is where beneficial bacteria convert:

• Ammonia → Nitrite

• Nitrite → Nitrate

Result:

✔ Stable water quality

✔ Healthier fish

✔ Stronger biofiltration performance

K+ Media Advantage

Unlike standard media, K+ Media includes:

• Added minerals

• Enzymes

• Calcium

• Magnesium

This creates:

✔ Faster filter maturation

✔ Better bacterial adhesion

✔ Enhanced biological performance

Surface Area:

• Total Surface Area: 1,350m² per m³

• Protected Surface Area: 1,025m² per m³

This is class-leading biological filtration media.

All orders are delivered by our delivery partners Royal Mail, DPD & Evri

• Expected shipping Time 2-7 days

• For a more detailed view of our shipping and handling policy please click the link at checkout

• 📦 UK mainland delivery

• 🚚 Dispatch in 1–2 working days  

• 💷 Free delivery on orders over £200

• Returns are FREE

• Not happy with the product return it in 30 days and get 100% refunded

• For a more detailed view of our returns policy please click here or the link at checkout

• Easy Returns & Exchanges

• Hassle-Free Process

• Builds Customer Confidence

• UK-based pond & swimming pond specialists

• Equipment used in professional installations

• Fast UK dispatch from trusted suppliers

• Expert after-sales support

• Secure checkout & trusted payment methods