Seachem Seagel 250 ml

• Removes phosphate, silicate, organics, metals, acids, and more.
• 50/50 blend of MatrixCarbon and PhosGuard.
• More convenient than two separate bags of media.
• Size : 100 ml with netbag / 250ml / 500 ml.

SeaGel is a blend of MatrixCarbon and PhosGuard and is is optimized specifically for aquaria where organic color body and acid removal is required without the introduction of phosphate. MatrixCarbon is an ultracapacity carbon for the removal of organic and color impurities. PhosGuard is a powerful remover of phosphate, silicate, toxic metals, and acids. Both components are bead shaped for optimum water flow characteristics and penetration. The components enhance each other and are ideal for reef and marine use. SeaGel may also be used in freshwater that is not phosphate buffered.

Although MatrixCarbon has the lowest detectable leachable phosphate content of all major carbon brands tested, some phosphate is still released. Adding PhosGuard to the mix compensates for this. Both components are bead shaped for optimum water flow characteristics and penetration. The components enhance each other and are ideal for reef and marine use.

Setup & Use

What it is. An equal-parts blend of MatrixCarbon and PhosGuard in one media: organic/colour removal and phosphate/silicate removal in a single bag, rather than running two separate media. Built for reef and marine tanks that need both jobs done without adding phosphate back in, though it also works in freshwater tanks that aren’t phosphate-buffered. This 250 ml pack is the same media as IndieFur’s 500 ml size, dosed at the same ratio per litre of tank water.

What it removes. Phosphate, silicate, organics, metals, acids and more, per Seachem’s own description.

Dosage & Directions

Seachem’s own dose. 250 mL per 150 to 225 L (40 to 60 US gallons). Scale down proportionally for a smaller top-up.

How and where it goes in. Rinse before use, then place it in a filter bag (Seachem’s own The Bag or Zip Bag) so water flows through it rather than around it. Seachem’s own caution: the media fizzes and warms on first wetting, expected, not a fault.

Replacement. About 3 to 4 months.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months’ remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Filter media and substrates carry no manufacturing or expiry date. Their working life begins on first contact with water, not on the shelf.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number, or email us if you would rather, and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 48 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.