Seachem CupriSorb

$7.42 ~~$10.75~~ In stock

Category: Aquarium Water Treatment

Seachem CupriSorb

Powerful adsorbent of copper and heavy metals
Copper specific chelating resin
Removes all types of copper

CupriSorb is a powerful adsorbent of copper and heavy metals. CupriSorb will remove copper more rapidly and efficiently than carbon and is thus ideal for emergency copper removal. It extracts all types of copper, including chelated copper, and remains effective until it turns a deep blue-black colour. It may be regenerated repeatedly. If placed in continuous use, it will gradually extract even precipitated copper from the gravel/substrate bed as well.

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Customer Reviews (4.5 / 5 · 4 reviews)

Leo ★★★★★ Oct 21, 2026

My copper test kit finally dropped to zero after three days of running this in my filter, and I didn't even have to do a water change to get there. The resin beads turned a darker blue as they worked, which was oddly satisfying to watch.

Matthew ★★★★★ Oct 19, 2026

Tossed this in my filter after treating a sick fish with copper, and within two days my test kit showed zero detectable levels. The chelating resin grabs every form of copper, not just the free ions, which is exactly what I needed.

Brian ★★★★★ Oct 18, 2026

I was worried about copper from a new decor piece, but this resin cleared it from my tank in just two days. It's satisfying to see the media darken as it pulls out the heavy metals. My fish are looking much more relaxed now.