Yamitsu Platinum 20000 Box Filter (GRP)

For medium to large goldfish and koi ponds, you need strong mechanical filtration backed up with serious biological surface area. The Yamitsu Platinum 20000 Box Filter (GRP) — FS524 delivers dependable multi-stage filtration in a robust fibreglass body.

Why it’s a good fit

• Suitable for goldfish and koi ponds
• Durable GRP (fibreglass) construction
• Very high internal surface area for biological filtration
• No moving parts — simple, reliable design
• Uses Kintama biological media, offering double the surface area of most fluid bed medias
• UV can be added separately if required

A straightforward pump-fed filter built for long-term reliability.

What’s included

As specified in the catalogue, Platinum filters are supplied with:

• 3 x foam layers
• 1 x white filter wadding
• 1 x blue matting
• 1 x carbon impregnated foam
• Kintama biological media

Specifications

Where it fits in your system

Typical pump-fed layout:

Pump → Platinum 20000 → Return

Install on a solid, level base with enough clearance above the unit to remove and rinse media during cleaning.

Maintenance notes

• Rinse foam and matting in pond water, not tap water.
• Replace carbon foam as required.
• Inspect pipework and seals periodically.

If you want high-capacity filtration in a traditional GRP box filter – without built-in UV – the FS524 is a dependable choice for larger pond systems.