• Around 534 m² (5,750 sq ft) of surface area — packed into a single 20 × 20 × 2.5 cm plate, using CerMedia's ultra-porous ceramic.
• Cuttable — the ceramic can be cut down with a hacksaw or angle grinder to fit a sump baffle, overflow compartment or an odd-shaped filter box.
• Resists clogging — the rigid open-pore structure doesn't compact the way loose media can, so flow through it stays consistent between cleans.
• Reusable — rinse in tank water at a water change rather than replacing on a schedule.
• No bag required — rigid enough to sit directly in a sump compartment or media rack without a mesh bag.

CerMedia's own dosing guidance for the MarinePure range is 1 gallon of Spheres, or one full 8×8×4" Block, per 500 US gallons of aquarium water in active flow for ammonia and nitrite control (roughly 100 US gallons in passive flow, for nitrate reduction). The Plate is a quarter the volume of the Block, and retailer spec sheets that reproduce CerMedia's figures put a single Plate at standalone filtration for tanks up to around 100 US gallons (380 L) — useful as a rough guide, though we'd treat CerMedia's own Block and Sphere dosing rate above as the more authoritative number if you're sizing precisely.

• Suitable for: sump compartments, media racks, and canister or filter boxes with room for a rigid slab of media — freshwater or marine, including reef systems.
• Not suitable for: tight hang-on-back baskets sized for loose pellets — use MarinePure GEMS or PODs there instead. Not a mechanical or chemical media — it won't polish water or remove odours on its own.

Rinse the Plate in tank water or dechlorinated water at a water change — never under tap water straight from the mains, since chlorine and chloramine will knock back the bacterial colony. There's no fixed replacement interval; the ceramic doesn't wear out, so a Plate keeps working until it's due for a clean.

• A sump baffle or media rack — the Plate is rigid enough to slot straight in without a bag.
• An ammonia and nitrite test kit — confirm the media is cycled before stocking up.

The MarinePure Plate has no stated wear-out life from CerMedia — it's ceramic, not a consumable cartridge — and any manufacturing fault is covered by your rights under Australian Consumer Law in addition to any retailer or manufacturer terms. Standard parcel freight applies.

Can I cut the Plate to a custom size?

Yes — it's rigid ceramic and can be cut with a hacksaw or angle grinder to fit a sump baffle or an odd-shaped compartment. Cutting it doesn't damage the remaining piece's biological performance.

Do I need a mesh bag for the Plate?

No — it's rigid enough to sit directly in a sump compartment or media rack. A bag is only needed for loose media like Spheres, GEMS or PODs.

Is the Plate reef safe?

Yes, the ceramic is inert and safe for reef and marine systems as well as freshwater.

Do I need to cycle a filter before adding livestock?

Yes. Any new biomedia needs time for bacteria to colonise the ceramic before it's doing useful biological work. Run it on established tank water, or fishless-cycle with an ammonia source, before stocking up.