Seachem Seagel

$3.59 ~~$5.99~~ In stock

Seachem SeaGel 100ml

Removes phosphate, silicate, organics, metals, acids, and more
50/50 blend of MatrixCarbon™ and PhosGuard™
More convenient than two separate bags of media

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.

Sizes:

100ml
250ml
500ml

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Customer Reviews (4.8 / 5 · 4 reviews)

Samuel ★★★★★ Oct 20, 2026

My nitrates were creeping up until I swapped to this single combined media bag, and the 50/50 carbon and phosphate blend handles everything in one go. My water clarity improved noticeably within just a couple days.

Ellie ★★★★★ Oct 19, 2026

I was tired of juggling two separate bags of media, so this all-in-one blend is a huge time-saver. The MatrixCarbon seems to keep my water crystal clear without stripping everything good out.

Alexander A. ★★★★★ Oct 18, 2026

The 50/50 blend of carbon and PhosGuard means I’m finally done juggling two separate bags of media—just one pouch in the filter and it’s handling phosphates and odors at once. Water’s been clearer within a week, and it’s dead simple to swap out.